81421340

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1$

素因数の和:137

約数の個数: 192

約数和(自身を含む): 237081600

約数和(自身を除く): 155660260

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 83, 91, 98, 110, 130, 140, 143, 154, 166, 182, 196, 220, 245, 260, 286, 308, 332, 343, 364, 385, 415, 455, 490, 539, 572, 581, 637, 686, 715, 770, 830, 910, 913, 980, 1001, 1078, 1079, 1162, 1274, 1372, 1430, 1540, 1660, 1715, 1820, 1826, 2002, 2156, 2158, 2324, 2548, 2695, 2860, 2905, 3185, 3430, 3652, 3773, 4004, 4067, 4316, 4459, 4565, 5005, 5390, 5395, 5810, 6370, 6391, 6860, 7007, 7546, 7553, 8134, 8918, 9130, 10010, 10780, 10790, 11620, 11869, 12740, 12782, 14014, 15092, 15106, 16268, 17836, 18260, 18865, 20020, 20335, 21580, 22295, 23738, 25564, 28028, 28469, 30212, 31955, 35035, 37730, 37765, 40670, 44590, 44737, 47476, 49049, 52871, 56938, 59345, 63910, 70070, 75460, 75530, 81340, 83083, 89180, 89474, 98098, 105742, 113876, 118690, 127820, 140140, 142345, 151060, 166166, 178948, 196196, 211484, 223685, 237380, 245245, 264355, 284690, 313159, 332332, 370097, 415415, 447370, 490490, 528710, 569380, 581581, 626318, 740194, 830830, 894740, 980980, 1057420, 1163162, 1252636, 1480388, 1565795, 1661660, 1850485, 2326324, 2907905, 3131590, 3700970, 4071067, 5815810, 6263180, 7401940, 8142134, 11631620, 16284268, 20355335, 40710670, 81421340]

約数ペア:

[(1, 81421340), (2, 40710670), (4, 20355335), (5, 16284268), (7, 11631620), (10, 8142134), (11, 7401940), (13, 6263180), (14, 5815810), (20, 4071067), (22, 3700970), (26, 3131590), (28, 2907905), (35, 2326324), (44, 1850485), (49, 1661660), (52, 1565795), (55, 1480388), (65, 1252636), (70, 1163162), (77, 1057420), (83, 980980), (91, 894740), (98, 830830), (110, 740194), (130, 626318), (140, 581581), (143, 569380), (154, 528710), (166, 490490), (182, 447370), (196, 415415), (220, 370097), (245, 332332), (260, 313159), (286, 284690), (308, 264355), (332, 245245), (343, 237380), (364, 223685), (385, 211484), (415, 196196), (455, 178948), (490, 166166), (539, 151060), (572, 142345), (581, 140140), (637, 127820), (686, 118690), (715, 113876), (770, 105742), (830, 98098), (910, 89474), (913, 89180), (980, 83083), (1001, 81340), (1078, 75530), (1079, 75460), (1162, 70070), (1274, 63910), (1372, 59345), (1430, 56938), (1540, 52871), (1660, 49049), (1715, 47476), (1820, 44737), (1826, 44590), (2002, 40670), (2156, 37765), (2158, 37730), (2324, 35035), (2548, 31955), (2695, 30212), (2860, 28469), (2905, 28028), (3185, 25564), (3430, 23738), (3652, 22295), (3773, 21580), (4004, 20335), (4067, 20020), (4316, 18865), (4459, 18260), (4565, 17836), (5005, 16268), (5390, 15106), (5395, 15092), (5810, 14014), (6370, 12782), (6391, 12740), (6860, 11869), (7007, 11620), (7546, 10790), (7553, 10780), (8134, 10010), (8918, 9130)]