21870500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 30964828

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 31, 34, 50, 62, 68, 83, 85, 100, 124, 125, 155, 166, 170, 250, 310, 332, 340, 415, 425, 500, 527, 620, 775, 830, 850, 1054, 1411, 1550, 1660, 1700, 2075, 2108, 2125, 2573, 2635, 2822, 3100, 3875, 4150, 4250, 5146, 5270, 5644, 7055, 7750, 8300, 8500, 10292, 10375, 10540, 12865, 13175, 14110, 15500, 20750, 25730, 26350, 28220, 35275, 41500, 43741, 51460, 52700, 64325, 65875, 70550, 87482, 128650, 131750, 141100, 174964, 176375, 218705, 257300, 263500, 321625, 352750, 437410, 643250, 705500, 874820, 1093525, 1286500, 2187050, 4374100, 5467625, 10935250, 21870500]

約数ペア:

[(1, 21870500), (2, 10935250), (4, 5467625), (5, 4374100), (10, 2187050), (17, 1286500), (20, 1093525), (25, 874820), (31, 705500), (34, 643250), (50, 437410), (62, 352750), (68, 321625), (83, 263500), (85, 257300), (100, 218705), (124, 176375), (125, 174964), (155, 141100), (166, 131750), (170, 128650), (250, 87482), (310, 70550), (332, 65875), (340, 64325), (415, 52700), (425, 51460), (500, 43741), (527, 41500), (620, 35275), (775, 28220), (830, 26350), (850, 25730), (1054, 20750), (1411, 15500), (1550, 14110), (1660, 13175), (1700, 12865), (2075, 10540), (2108, 10375), (2125, 10292), (2573, 8500), (2635, 8300), (2822, 7750), (3100, 7055), (3875, 5644), (4150, 5270), (4250, 5146)]