20080400

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2953}}^1$

素因数の和:2988

約数の個数: 60

約数和(自身を含む): 51098292

約数和(自身を除く): 31017892

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 2953, 3400, 5906, 6800, 11812, 14765, 23624, 29530, 47248, 50201, 59060, 73825, 100402, 118120, 147650, 200804, 236240, 251005, 295300, 401608, 502010, 590600, 803216, 1004020, 1181200, 1255025, 2008040, 2510050, 4016080, 5020100, 10040200, 20080400]

約数ペア:

[(1, 20080400), (2, 10040200), (4, 5020100), (5, 4016080), (8, 2510050), (10, 2008040), (16, 1255025), (17, 1181200), (20, 1004020), (25, 803216), (34, 590600), (40, 502010), (50, 401608), (68, 295300), (80, 251005), (85, 236240), (100, 200804), (136, 147650), (170, 118120), (200, 100402), (272, 73825), (340, 59060), (400, 50201), (425, 47248), (680, 29530), (850, 23624), (1360, 14765), (1700, 11812), (2953, 6800), (3400, 5906)]