20180149625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{1031}}^1$

素因数の和:1275

約数の個数: 64

約数和(自身を含む): 27309394944

約数和(自身を除く): 7129245319

約数列:

[1, 5, 17, 25, 61, 85, 125, 151, 305, 425, 755, 1031, 1037, 1525, 2125, 2567, 3775, 5155, 5185, 7625, 9211, 12835, 17527, 18875, 25775, 25925, 46055, 62891, 64175, 87635, 128875, 129625, 155681, 156587, 230275, 314455, 320875, 438175, 778405, 782935, 1069147, 1151375, 1572275, 2190875, 2646577, 3892025, 3914675, 5345735, 7861375, 9496541, 13232885, 19460125, 19573375, 26728675, 47482705, 66164425, 133643375, 161441197, 237413525, 330822125, 807205985, 1187067625, 4036029925, 20180149625]

約数ペア:

[(1, 20180149625), (5, 4036029925), (17, 1187067625), (25, 807205985), (61, 330822125), (85, 237413525), (125, 161441197), (151, 133643375), (305, 66164425), (425, 47482705), (755, 26728675), (1031, 19573375), (1037, 19460125), (1525, 13232885), (2125, 9496541), (2567, 7861375), (3775, 5345735), (5155, 3914675), (5185, 3892025), (7625, 2646577), (9211, 2190875), (12835, 1572275), (17527, 1151375), (18875, 1069147), (25775, 782935), (25925, 778405), (46055, 438175), (62891, 320875), (64175, 314455), (87635, 230275), (128875, 156587), (129625, 155681)]