21643425

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 41783040

約数和(自身を除く): 20139615

約数列:

[1, 3, 5, 9, 15, 25, 29, 31, 45, 75, 87, 93, 107, 145, 155, 225, 261, 279, 321, 435, 465, 535, 725, 775, 899, 963, 1305, 1395, 1605, 2175, 2325, 2675, 2697, 3103, 3317, 4495, 4815, 6525, 6975, 8025, 8091, 9309, 9951, 13485, 15515, 16585, 22475, 24075, 27927, 29853, 40455, 46545, 49755, 67425, 77575, 82925, 96193, 139635, 149265, 202275, 232725, 248775, 288579, 480965, 698175, 746325, 865737, 1442895, 2404825, 4328685, 7214475, 21643425]

約数ペア:

[(1, 21643425), (3, 7214475), (5, 4328685), (9, 2404825), (15, 1442895), (25, 865737), (29, 746325), (31, 698175), (45, 480965), (75, 288579), (87, 248775), (93, 232725), (107, 202275), (145, 149265), (155, 139635), (225, 96193), (261, 82925), (279, 77575), (321, 67425), (435, 49755), (465, 46545), (535, 40455), (725, 29853), (775, 27927), (899, 24075), (963, 22475), (1305, 16585), (1395, 15515), (1605, 13485), (2175, 9951), (2325, 9309), (2675, 8091), (2697, 8025), (3103, 6975), (3317, 6525), (4495, 4815)]