20993490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{709}}^1$

素因数の和:776

約数の個数: 96

約数和(自身を含む): 63797760

約数和(自身を除く): 42804270

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 47, 63, 70, 90, 94, 105, 126, 141, 210, 235, 282, 315, 329, 423, 470, 630, 658, 705, 709, 846, 987, 1410, 1418, 1645, 1974, 2115, 2127, 2961, 3290, 3545, 4230, 4254, 4935, 4963, 5922, 6381, 7090, 9870, 9926, 10635, 12762, 14805, 14889, 21270, 24815, 29610, 29778, 31905, 33323, 44667, 49630, 63810, 66646, 74445, 89334, 99969, 148890, 166615, 199938, 223335, 233261, 299907, 333230, 446670, 466522, 499845, 599814, 699783, 999690, 1166305, 1399566, 1499535, 2099349, 2332610, 2999070, 3498915, 4198698, 6997830, 10496745, 20993490]

約数ペア:

[(1, 20993490), (2, 10496745), (3, 6997830), (5, 4198698), (6, 3498915), (7, 2999070), (9, 2332610), (10, 2099349), (14, 1499535), (15, 1399566), (18, 1166305), (21, 999690), (30, 699783), (35, 599814), (42, 499845), (45, 466522), (47, 446670), (63, 333230), (70, 299907), (90, 233261), (94, 223335), (105, 199938), (126, 166615), (141, 148890), (210, 99969), (235, 89334), (282, 74445), (315, 66646), (329, 63810), (423, 49630), (470, 44667), (630, 33323), (658, 31905), (705, 29778), (709, 29610), (846, 24815), (987, 21270), (1410, 14889), (1418, 14805), (1645, 12762), (1974, 10635), (2115, 9926), (2127, 9870), (2961, 7090), (3290, 6381), (3545, 5922), (4230, 4963), (4254, 4935)]