21240810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:200

約数の個数: 96

約数和(自身を含む): 57973968

約数和(自身を除く): 36733158

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 53, 61, 73, 90, 106, 122, 146, 159, 183, 219, 265, 305, 318, 365, 366, 438, 477, 530, 549, 610, 657, 730, 795, 915, 954, 1095, 1098, 1314, 1590, 1830, 2190, 2385, 2745, 3233, 3285, 3869, 4453, 4770, 5490, 6466, 6570, 7738, 8906, 9699, 11607, 13359, 16165, 19345, 19398, 22265, 23214, 26718, 29097, 32330, 34821, 38690, 40077, 44530, 48495, 58035, 58194, 66795, 69642, 80154, 96990, 116070, 133590, 145485, 174105, 200385, 236009, 290970, 348210, 400770, 472018, 708027, 1180045, 1416054, 2124081, 2360090, 3540135, 4248162, 7080270, 10620405, 21240810]

約数ペア:

[(1, 21240810), (2, 10620405), (3, 7080270), (5, 4248162), (6, 3540135), (9, 2360090), (10, 2124081), (15, 1416054), (18, 1180045), (30, 708027), (45, 472018), (53, 400770), (61, 348210), (73, 290970), (90, 236009), (106, 200385), (122, 174105), (146, 145485), (159, 133590), (183, 116070), (219, 96990), (265, 80154), (305, 69642), (318, 66795), (365, 58194), (366, 58035), (438, 48495), (477, 44530), (530, 40077), (549, 38690), (610, 34821), (657, 32330), (730, 29097), (795, 26718), (915, 23214), (954, 22265), (1095, 19398), (1098, 19345), (1314, 16165), (1590, 13359), (1830, 11607), (2190, 9699), (2385, 8906), (2745, 7738), (3233, 6570), (3285, 6466), (3869, 5490), (4453, 4770)]