19845800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1$

素因数の和:495

約数の個数: 96

約数和(自身を含む): 52731000

約数和(自身を除く): 32885200

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 85, 100, 104, 130, 136, 170, 200, 221, 260, 325, 340, 425, 442, 449, 520, 650, 680, 850, 884, 898, 1105, 1300, 1700, 1768, 1796, 2210, 2245, 2600, 3400, 3592, 4420, 4490, 5525, 5837, 7633, 8840, 8980, 11050, 11225, 11674, 15266, 17960, 22100, 22450, 23348, 29185, 30532, 38165, 44200, 44900, 46696, 58370, 61064, 76330, 89800, 99229, 116740, 145925, 152660, 190825, 198458, 233480, 291850, 305320, 381650, 396916, 496145, 583700, 763300, 793832, 992290, 1167400, 1526600, 1984580, 2480725, 3969160, 4961450, 9922900, 19845800]

約数ペア:

[(1, 19845800), (2, 9922900), (4, 4961450), (5, 3969160), (8, 2480725), (10, 1984580), (13, 1526600), (17, 1167400), (20, 992290), (25, 793832), (26, 763300), (34, 583700), (40, 496145), (50, 396916), (52, 381650), (65, 305320), (68, 291850), (85, 233480), (100, 198458), (104, 190825), (130, 152660), (136, 145925), (170, 116740), (200, 99229), (221, 89800), (260, 76330), (325, 61064), (340, 58370), (425, 46696), (442, 44900), (449, 44200), (520, 38165), (650, 30532), (680, 29185), (850, 23348), (884, 22450), (898, 22100), (1105, 17960), (1300, 15266), (1700, 11674), (1768, 11225), (1796, 11050), (2210, 8980), (2245, 8840), (2600, 7633), (3400, 5837), (3592, 5525), (4420, 4490)]