31782156

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^2$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 87139584

約数和(自身を除く): 55357428

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 73, 84, 142, 146, 213, 219, 284, 292, 426, 438, 497, 511, 852, 876, 994, 1022, 1491, 1533, 1988, 2044, 2982, 3066, 5183, 5329, 5964, 6132, 10366, 10658, 15549, 15987, 20732, 21316, 31098, 31974, 36281, 37303, 62196, 63948, 72562, 74606, 108843, 111909, 145124, 149212, 217686, 223818, 378359, 435372, 447636, 756718, 1135077, 1513436, 2270154, 2648513, 4540308, 5297026, 7945539, 10594052, 15891078, 31782156]

約数ペア:

[(1, 31782156), (2, 15891078), (3, 10594052), (4, 7945539), (6, 5297026), (7, 4540308), (12, 2648513), (14, 2270154), (21, 1513436), (28, 1135077), (42, 756718), (71, 447636), (73, 435372), (84, 378359), (142, 223818), (146, 217686), (213, 149212), (219, 145124), (284, 111909), (292, 108843), (426, 74606), (438, 72562), (497, 63948), (511, 62196), (852, 37303), (876, 36281), (994, 31974), (1022, 31098), (1491, 21316), (1533, 20732), (1988, 15987), (2044, 15549), (2982, 10658), (3066, 10366), (5183, 6132), (5329, 5964)]