21641620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:110

約数の個数: 192

約数和(自身を含む): 65028096

約数和(自身を除く): 43386476

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 23, 26, 28, 35, 44, 46, 47, 52, 55, 65, 70, 77, 91, 92, 94, 110, 115, 130, 140, 143, 154, 161, 182, 188, 220, 230, 235, 253, 260, 286, 299, 308, 322, 329, 364, 385, 455, 460, 470, 506, 517, 572, 598, 611, 644, 658, 715, 770, 805, 910, 940, 1001, 1012, 1034, 1081, 1196, 1222, 1265, 1316, 1430, 1495, 1540, 1610, 1645, 1771, 1820, 2002, 2068, 2093, 2162, 2444, 2530, 2585, 2860, 2990, 3055, 3220, 3289, 3290, 3542, 3619, 4004, 4186, 4277, 4324, 5005, 5060, 5170, 5405, 5980, 6110, 6578, 6580, 6721, 7084, 7238, 7567, 8372, 8554, 8855, 10010, 10340, 10465, 10810, 11891, 12220, 13156, 13442, 14053, 14476, 15134, 16445, 17108, 17710, 18095, 20020, 20930, 21385, 21620, 23023, 23782, 26884, 28106, 30268, 32890, 33605, 35420, 36190, 37835, 41860, 42770, 46046, 47047, 47564, 56212, 59455, 65780, 67210, 70265, 72380, 75670, 83237, 85540, 92092, 94094, 98371, 115115, 118910, 134420, 140530, 151340, 154583, 166474, 188188, 196742, 230230, 235235, 237820, 281060, 309166, 332948, 393484, 416185, 460460, 470470, 491855, 618332, 772915, 832370, 940940, 983710, 1082081, 1545830, 1664740, 1967420, 2164162, 3091660, 4328324, 5410405, 10820810, 21641620]

約数ペア:

[(1, 21641620), (2, 10820810), (4, 5410405), (5, 4328324), (7, 3091660), (10, 2164162), (11, 1967420), (13, 1664740), (14, 1545830), (20, 1082081), (22, 983710), (23, 940940), (26, 832370), (28, 772915), (35, 618332), (44, 491855), (46, 470470), (47, 460460), (52, 416185), (55, 393484), (65, 332948), (70, 309166), (77, 281060), (91, 237820), (92, 235235), (94, 230230), (110, 196742), (115, 188188), (130, 166474), (140, 154583), (143, 151340), (154, 140530), (161, 134420), (182, 118910), (188, 115115), (220, 98371), (230, 94094), (235, 92092), (253, 85540), (260, 83237), (286, 75670), (299, 72380), (308, 70265), (322, 67210), (329, 65780), (364, 59455), (385, 56212), (455, 47564), (460, 47047), (470, 46046), (506, 42770), (517, 41860), (572, 37835), (598, 36190), (611, 35420), (644, 33605), (658, 32890), (715, 30268), (770, 28106), (805, 26884), (910, 23782), (940, 23023), (1001, 21620), (1012, 21385), (1034, 20930), (1081, 20020), (1196, 18095), (1222, 17710), (1265, 17108), (1316, 16445), (1430, 15134), (1495, 14476), (1540, 14053), (1610, 13442), (1645, 13156), (1771, 12220), (1820, 11891), (2002, 10810), (2068, 10465), (2093, 10340), (2162, 10010), (2444, 8855), (2530, 8554), (2585, 8372), (2860, 7567), (2990, 7238), (3055, 7084), (3220, 6721), (3289, 6580), (3290, 6578), (3542, 6110), (3619, 5980), (4004, 5405), (4186, 5170), (4277, 5060), (4324, 5005)]