21087610075

素因数分解:

$5^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1\times {\mathrm{2069}}^1$

素因数の和:2644

約数の個数: 48

約数和(自身を含む): 30185568000

約数和(自身を除く): 9097957925

約数列:

[1, 5, 7, 25, 35, 139, 175, 419, 695, 973, 2069, 2095, 2933, 3475, 4865, 10345, 10475, 14483, 14665, 24325, 51725, 58241, 72415, 73325, 287591, 291205, 362075, 407687, 866911, 1437955, 1456025, 2013137, 2038435, 4334555, 6068377, 7189775, 10065685, 10192175, 21672775, 30341885, 50328425, 120500629, 151709425, 602503145, 843504403, 3012515725, 4217522015, 21087610075]

約数ペア:

[(1, 21087610075), (5, 4217522015), (7, 3012515725), (25, 843504403), (35, 602503145), (139, 151709425), (175, 120500629), (419, 50328425), (695, 30341885), (973, 21672775), (2069, 10192175), (2095, 10065685), (2933, 7189775), (3475, 6068377), (4865, 4334555), (10345, 2038435), (10475, 2013137), (14483, 1456025), (14665, 1437955), (24325, 866911), (51725, 407687), (58241, 362075), (72415, 291205), (73325, 287591)]