217992080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1621}}^1$

素因数の和:1716

約数の個数: 60

約数和(自身を含む): 519815316

約数和(自身を除く): 301823236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1621, 1640, 1681, 3242, 3280, 3362, 6484, 6724, 8105, 8405, 12968, 13448, 16210, 16810, 25936, 26896, 32420, 33620, 64840, 66461, 67240, 129680, 132922, 134480, 265844, 332305, 531688, 664610, 1063376, 1329220, 2658440, 2724901, 5316880, 5449802, 10899604, 13624505, 21799208, 27249010, 43598416, 54498020, 108996040, 217992080]

約数ペア:

[(1, 217992080), (2, 108996040), (4, 54498020), (5, 43598416), (8, 27249010), (10, 21799208), (16, 13624505), (20, 10899604), (40, 5449802), (41, 5316880), (80, 2724901), (82, 2658440), (164, 1329220), (205, 1063376), (328, 664610), (410, 531688), (656, 332305), (820, 265844), (1621, 134480), (1640, 132922), (1681, 129680), (3242, 67240), (3280, 66461), (3362, 64840), (6484, 33620), (6724, 32420), (8105, 26896), (8405, 25936), (12968, 16810), (13448, 16210)]