81422540

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{307}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 174636000

約数和(自身を除く): 93213460

約数列:

[1, 2, 4, 5, 10, 20, 89, 149, 178, 298, 307, 356, 445, 596, 614, 745, 890, 1228, 1490, 1535, 1780, 2980, 3070, 6140, 13261, 26522, 27323, 45743, 53044, 54646, 66305, 91486, 109292, 132610, 136615, 182972, 228715, 265220, 273230, 457430, 546460, 914860, 4071127, 8142254, 16284508, 20355635, 40711270, 81422540]

約数ペア:

[(1, 81422540), (2, 40711270), (4, 20355635), (5, 16284508), (10, 8142254), (20, 4071127), (89, 914860), (149, 546460), (178, 457430), (298, 273230), (307, 265220), (356, 228715), (445, 182972), (596, 136615), (614, 132610), (745, 109292), (890, 91486), (1228, 66305), (1490, 54646), (1535, 53044), (1780, 45743), (2980, 27323), (3070, 26522), (6140, 13261)]