20887905460

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1\times {\mathrm{25969}}^1$

素因数の和:26416

約数の個数: 48

約数和(自身を含む): 44345125440

約数和(自身を除く): 23457219980

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 307, 524, 614, 655, 1228, 1310, 1535, 2620, 3070, 6140, 25969, 40217, 51938, 80434, 103876, 129845, 160868, 201085, 259690, 402170, 519380, 804340, 3401939, 6803878, 7972483, 13607756, 15944966, 17009695, 31889932, 34019390, 39862415, 68038780, 79724830, 159449660, 1044395273, 2088790546, 4177581092, 5221976365, 10443952730, 20887905460]

約数ペア:

[(1, 20887905460), (2, 10443952730), (4, 5221976365), (5, 4177581092), (10, 2088790546), (20, 1044395273), (131, 159449660), (262, 79724830), (307, 68038780), (524, 39862415), (614, 34019390), (655, 31889932), (1228, 17009695), (1310, 15944966), (1535, 13607756), (2620, 7972483), (3070, 6803878), (6140, 3401939), (25969, 804340), (40217, 519380), (51938, 402170), (80434, 259690), (103876, 201085), (129845, 160868)]