18870280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3299}}^1$

素因数の和:3334

約数の個数: 64

約数和(自身を含む): 49896000

約数和(自身を除く): 31025720

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3299, 5720, 6598, 13196, 16495, 26392, 32990, 36289, 42887, 65980, 72578, 85774, 131960, 145156, 171548, 181445, 214435, 290312, 343096, 362890, 428870, 471757, 725780, 857740, 943514, 1451560, 1715480, 1887028, 2358785, 3774056, 4717570, 9435140, 18870280]

約数ペア:

[(1, 18870280), (2, 9435140), (4, 4717570), (5, 3774056), (8, 2358785), (10, 1887028), (11, 1715480), (13, 1451560), (20, 943514), (22, 857740), (26, 725780), (40, 471757), (44, 428870), (52, 362890), (55, 343096), (65, 290312), (88, 214435), (104, 181445), (110, 171548), (130, 145156), (143, 131960), (220, 85774), (260, 72578), (286, 65980), (440, 42887), (520, 36289), (572, 32990), (715, 26392), (1144, 16495), (1430, 13196), (2860, 6598), (3299, 5720)]