257437180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 216

約数和(自身を含む): 748881504

約数和(自身を除く): 491444324

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 121, 130, 140, 143, 154, 167, 182, 196, 220, 242, 245, 260, 286, 308, 334, 364, 385, 455, 484, 490, 539, 572, 605, 637, 668, 715, 770, 835, 847, 910, 980, 1001, 1078, 1169, 1210, 1274, 1430, 1540, 1573, 1670, 1694, 1820, 1837, 2002, 2156, 2171, 2338, 2420, 2548, 2695, 2860, 3146, 3185, 3340, 3388, 3674, 4004, 4235, 4342, 4676, 5005, 5390, 5845, 5929, 6292, 6370, 7007, 7348, 7865, 8183, 8470, 8684, 9185, 10010, 10780, 10855, 11011, 11690, 11858, 12740, 12859, 14014, 15197, 15730, 16366, 16940, 18370, 20020, 20207, 21710, 22022, 23380, 23716, 23881, 25718, 28028, 29645, 30394, 31460, 32732, 35035, 36740, 40414, 40915, 43420, 44044, 47762, 51436, 55055, 59290, 60788, 64295, 70070, 75985, 77077, 80828, 81830, 90013, 95524, 101035, 106379, 110110, 118580, 119405, 128590, 140140, 141449, 151970, 154154, 163660, 167167, 180026, 202070, 212758, 220220, 238810, 257180, 262691, 282898, 303940, 308308, 334334, 360052, 385385, 404140, 425516, 450065, 477620, 525382, 531895, 565796, 668668, 707245, 770770, 835835, 900130, 990143, 1050764, 1063790, 1170169, 1313455, 1414490, 1541540, 1671670, 1800260, 1838837, 1980286, 2127580, 2340338, 2626910, 2828980, 3343340, 3677674, 3960572, 4680676, 4950715, 5253820, 5850845, 7355348, 9194185, 9901430, 11701690, 12871859, 18388370, 19802860, 23403380, 25743718, 36776740, 51487436, 64359295, 128718590, 257437180]

約数ペア:

[(1, 257437180), (2, 128718590), (4, 64359295), (5, 51487436), (7, 36776740), (10, 25743718), (11, 23403380), (13, 19802860), (14, 18388370), (20, 12871859), (22, 11701690), (26, 9901430), (28, 9194185), (35, 7355348), (44, 5850845), (49, 5253820), (52, 4950715), (55, 4680676), (65, 3960572), (70, 3677674), (77, 3343340), (91, 2828980), (98, 2626910), (110, 2340338), (121, 2127580), (130, 1980286), (140, 1838837), (143, 1800260), (154, 1671670), (167, 1541540), (182, 1414490), (196, 1313455), (220, 1170169), (242, 1063790), (245, 1050764), (260, 990143), (286, 900130), (308, 835835), (334, 770770), (364, 707245), (385, 668668), (455, 565796), (484, 531895), (490, 525382), (539, 477620), (572, 450065), (605, 425516), (637, 404140), (668, 385385), (715, 360052), (770, 334334), (835, 308308), (847, 303940), (910, 282898), (980, 262691), (1001, 257180), (1078, 238810), (1169, 220220), (1210, 212758), (1274, 202070), (1430, 180026), (1540, 167167), (1573, 163660), (1670, 154154), (1694, 151970), (1820, 141449), (1837, 140140), (2002, 128590), (2156, 119405), (2171, 118580), (2338, 110110), (2420, 106379), (2548, 101035), (2695, 95524), (2860, 90013), (3146, 81830), (3185, 80828), (3340, 77077), (3388, 75985), (3674, 70070), (4004, 64295), (4235, 60788), (4342, 59290), (4676, 55055), (5005, 51436), (5390, 47762), (5845, 44044), (5929, 43420), (6292, 40915), (6370, 40414), (7007, 36740), (7348, 35035), (7865, 32732), (8183, 31460), (8470, 30394), (8684, 29645), (9185, 28028), (10010, 25718), (10780, 23881), (10855, 23716), (11011, 23380), (11690, 22022), (11858, 21710), (12740, 20207), (12859, 20020), (14014, 18370), (15197, 16940), (15730, 16366)]