20032840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:686

約数の個数: 64

約数和(自身を含む): 48628800

約数和(自身を除く): 28595960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 613, 760, 817, 860, 1226, 1634, 1720, 2452, 3065, 3268, 4085, 4904, 6130, 6536, 8170, 11647, 12260, 16340, 23294, 24520, 26359, 32680, 46588, 52718, 58235, 93176, 105436, 116470, 131795, 210872, 232940, 263590, 465880, 500821, 527180, 1001642, 1054360, 2003284, 2504105, 4006568, 5008210, 10016420, 20032840]

約数ペア:

[(1, 20032840), (2, 10016420), (4, 5008210), (5, 4006568), (8, 2504105), (10, 2003284), (19, 1054360), (20, 1001642), (38, 527180), (40, 500821), (43, 465880), (76, 263590), (86, 232940), (95, 210872), (152, 131795), (172, 116470), (190, 105436), (215, 93176), (344, 58235), (380, 52718), (430, 46588), (613, 32680), (760, 26359), (817, 24520), (860, 23294), (1226, 16340), (1634, 12260), (1720, 11647), (2452, 8170), (3065, 6536), (3268, 6130), (4085, 4904)]