20121897775

素因数分解:

$5^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{63421}}^1$

素因数の和:63489

約数の個数: 48

約数和(自身を含む): 29884446400

約数和(自身を除く): 9762548625

約数列:

[1, 5, 7, 25, 35, 37, 49, 175, 185, 245, 259, 343, 925, 1225, 1295, 1715, 1813, 6475, 8575, 9065, 12691, 45325, 63421, 63455, 317105, 317275, 443947, 1585525, 2219735, 2346577, 3107629, 11098675, 11732885, 15538145, 16426039, 21753403, 58664425, 77690725, 82130195, 108767015, 114982273, 410650975, 543835075, 574911365, 804875911, 2874556825, 4024379555, 20121897775]

約数ペア:

[(1, 20121897775), (5, 4024379555), (7, 2874556825), (25, 804875911), (35, 574911365), (37, 543835075), (49, 410650975), (175, 114982273), (185, 108767015), (245, 82130195), (259, 77690725), (343, 58664425), (925, 21753403), (1225, 16426039), (1295, 15538145), (1715, 11732885), (1813, 11098675), (6475, 3107629), (8575, 2346577), (9065, 2219735), (12691, 1585525), (45325, 443947), (63421, 317275), (63455, 317105)]