20205126800

素因数分解:

$2^4\times 5^2\times {\mathrm{389}}^1\times {\mathrm{129853}}^1$

素因数の和:130260

約数の個数: 60

約数和(自身を含む): 48667980660

約数和(自身を除く): 28462853860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 389, 400, 778, 1556, 1945, 3112, 3890, 6224, 7780, 9725, 15560, 19450, 31120, 38900, 77800, 129853, 155600, 259706, 519412, 649265, 1038824, 1298530, 2077648, 2597060, 3246325, 5194120, 6492650, 10388240, 12985300, 25970600, 50512817, 51941200, 101025634, 202051268, 252564085, 404102536, 505128170, 808205072, 1010256340, 1262820425, 2020512680, 2525640850, 4041025360, 5051281700, 10102563400, 20205126800]

約数ペア:

[(1, 20205126800), (2, 10102563400), (4, 5051281700), (5, 4041025360), (8, 2525640850), (10, 2020512680), (16, 1262820425), (20, 1010256340), (25, 808205072), (40, 505128170), (50, 404102536), (80, 252564085), (100, 202051268), (200, 101025634), (389, 51941200), (400, 50512817), (778, 25970600), (1556, 12985300), (1945, 10388240), (3112, 6492650), (3890, 5194120), (6224, 3246325), (7780, 2597060), (9725, 2077648), (15560, 1298530), (19450, 1038824), (31120, 649265), (38900, 519412), (77800, 259706), (129853, 155600)]