20308700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 46872000

約数和(自身を除く): 26563300

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 47, 50, 58, 94, 100, 116, 145, 149, 188, 235, 290, 298, 470, 580, 596, 725, 745, 940, 1175, 1363, 1450, 1490, 2350, 2726, 2900, 2980, 3725, 4321, 4700, 5452, 6815, 7003, 7450, 8642, 13630, 14006, 14900, 17284, 21605, 27260, 28012, 34075, 35015, 43210, 68150, 70030, 86420, 108025, 136300, 140060, 175075, 203087, 216050, 350150, 406174, 432100, 700300, 812348, 1015435, 2030870, 4061740, 5077175, 10154350, 20308700]

約数ペア:

[(1, 20308700), (2, 10154350), (4, 5077175), (5, 4061740), (10, 2030870), (20, 1015435), (25, 812348), (29, 700300), (47, 432100), (50, 406174), (58, 350150), (94, 216050), (100, 203087), (116, 175075), (145, 140060), (149, 136300), (188, 108025), (235, 86420), (290, 70030), (298, 68150), (470, 43210), (580, 35015), (596, 34075), (725, 28012), (745, 27260), (940, 21605), (1175, 17284), (1363, 14900), (1450, 14006), (1490, 13630), (2350, 8642), (2726, 7450), (2900, 7003), (2980, 6815), (3725, 5452), (4321, 4700)]