18229250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 19510270

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 71, 79, 125, 130, 142, 158, 250, 325, 355, 395, 650, 710, 790, 923, 1027, 1625, 1775, 1846, 1975, 2054, 3250, 3550, 3950, 4615, 5135, 5609, 8875, 9230, 9875, 10270, 11218, 17750, 19750, 23075, 25675, 28045, 46150, 51350, 56090, 72917, 115375, 128375, 140225, 145834, 230750, 256750, 280450, 364585, 701125, 729170, 1402250, 1822925, 3645850, 9114625, 18229250]

約数ペア:

[(1, 18229250), (2, 9114625), (5, 3645850), (10, 1822925), (13, 1402250), (25, 729170), (26, 701125), (50, 364585), (65, 280450), (71, 256750), (79, 230750), (125, 145834), (130, 140225), (142, 128375), (158, 115375), (250, 72917), (325, 56090), (355, 51350), (395, 46150), (650, 28045), (710, 25675), (790, 23075), (923, 19750), (1027, 17750), (1625, 11218), (1775, 10270), (1846, 9875), (1975, 9230), (2054, 8875), (3250, 5609), (3550, 5135), (3950, 4615)]