21900660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 64012032

約数和(自身を除く): 42111372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 71, 97, 106, 142, 159, 194, 212, 213, 265, 284, 291, 318, 355, 388, 426, 485, 530, 582, 636, 710, 795, 852, 970, 1060, 1065, 1164, 1420, 1455, 1590, 1940, 2130, 2910, 3180, 3763, 4260, 5141, 5820, 6887, 7526, 10282, 11289, 13774, 15052, 15423, 18815, 20564, 20661, 22578, 25705, 27548, 30846, 34435, 37630, 41322, 45156, 51410, 56445, 61692, 68870, 75260, 77115, 82644, 102820, 103305, 112890, 137740, 154230, 206610, 225780, 308460, 365011, 413220, 730022, 1095033, 1460044, 1825055, 2190066, 3650110, 4380132, 5475165, 7300220, 10950330, 21900660]

約数ペア:

[(1, 21900660), (2, 10950330), (3, 7300220), (4, 5475165), (5, 4380132), (6, 3650110), (10, 2190066), (12, 1825055), (15, 1460044), (20, 1095033), (30, 730022), (53, 413220), (60, 365011), (71, 308460), (97, 225780), (106, 206610), (142, 154230), (159, 137740), (194, 112890), (212, 103305), (213, 102820), (265, 82644), (284, 77115), (291, 75260), (318, 68870), (355, 61692), (388, 56445), (426, 51410), (485, 45156), (530, 41322), (582, 37630), (636, 34435), (710, 30846), (795, 27548), (852, 25705), (970, 22578), (1060, 20661), (1065, 20564), (1164, 18815), (1420, 15423), (1455, 15052), (1590, 13774), (1940, 11289), (2130, 10282), (2910, 7526), (3180, 6887), (3763, 5820), (4260, 5141)]