21260460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 64999872

約数和(自身を除く): 43739412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 97, 130, 156, 194, 195, 260, 281, 291, 388, 390, 485, 562, 582, 780, 843, 970, 1124, 1164, 1261, 1405, 1455, 1686, 1940, 2522, 2810, 2910, 3372, 3653, 3783, 4215, 5044, 5620, 5820, 6305, 7306, 7566, 8430, 10959, 12610, 14612, 15132, 16860, 18265, 18915, 21918, 25220, 27257, 36530, 37830, 43836, 54514, 54795, 73060, 75660, 81771, 109028, 109590, 136285, 163542, 219180, 272570, 327084, 354341, 408855, 545140, 708682, 817710, 1063023, 1417364, 1635420, 1771705, 2126046, 3543410, 4252092, 5315115, 7086820, 10630230, 21260460]

約数ペア:

[(1, 21260460), (2, 10630230), (3, 7086820), (4, 5315115), (5, 4252092), (6, 3543410), (10, 2126046), (12, 1771705), (13, 1635420), (15, 1417364), (20, 1063023), (26, 817710), (30, 708682), (39, 545140), (52, 408855), (60, 354341), (65, 327084), (78, 272570), (97, 219180), (130, 163542), (156, 136285), (194, 109590), (195, 109028), (260, 81771), (281, 75660), (291, 73060), (388, 54795), (390, 54514), (485, 43836), (562, 37830), (582, 36530), (780, 27257), (843, 25220), (970, 21918), (1124, 18915), (1164, 18265), (1261, 16860), (1405, 15132), (1455, 14612), (1686, 12610), (1940, 10959), (2522, 8430), (2810, 7566), (2910, 7306), (3372, 6305), (3653, 5820), (3783, 5620), (4215, 5044)]