81617360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{569}}^1$

素因数の和:756

約数の個数: 80

約数和(自身を含む): 208647360

約数和(自身を除く): 127030000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 163, 176, 220, 326, 440, 569, 652, 815, 880, 1138, 1304, 1630, 1793, 2276, 2608, 2845, 3260, 3586, 4552, 5690, 6259, 6520, 7172, 8965, 9104, 11380, 12518, 13040, 14344, 17930, 22760, 25036, 28688, 31295, 35860, 45520, 50072, 62590, 71720, 92747, 100144, 125180, 143440, 185494, 250360, 370988, 463735, 500720, 741976, 927470, 1020217, 1483952, 1854940, 2040434, 3709880, 4080868, 5101085, 7419760, 8161736, 10202170, 16323472, 20404340, 40808680, 81617360]

約数ペア:

[(1, 81617360), (2, 40808680), (4, 20404340), (5, 16323472), (8, 10202170), (10, 8161736), (11, 7419760), (16, 5101085), (20, 4080868), (22, 3709880), (40, 2040434), (44, 1854940), (55, 1483952), (80, 1020217), (88, 927470), (110, 741976), (163, 500720), (176, 463735), (220, 370988), (326, 250360), (440, 185494), (569, 143440), (652, 125180), (815, 100144), (880, 92747), (1138, 71720), (1304, 62590), (1630, 50072), (1793, 45520), (2276, 35860), (2608, 31295), (2845, 28688), (3260, 25036), (3586, 22760), (4552, 17930), (5690, 14344), (6259, 13040), (6520, 12518), (7172, 11380), (8965, 9104)]