18870031225

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1\times {\mathrm{431}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 24159596544

約数和(自身を除く): 5289565319

約数列:

[1, 5, 25, 53, 173, 191, 265, 431, 865, 955, 1325, 2155, 4325, 4775, 9169, 10123, 10775, 22843, 33043, 45845, 50615, 74563, 82321, 114215, 165215, 229225, 253075, 372815, 411605, 571075, 826075, 1751279, 1864075, 2058025, 3951839, 4363013, 8756395, 14241533, 19759195, 21815065, 43781975, 71207665, 98795975, 109075325, 356038325, 754801249, 3774006245, 18870031225]

約数ペア:

[(1, 18870031225), (5, 3774006245), (25, 754801249), (53, 356038325), (173, 109075325), (191, 98795975), (265, 71207665), (431, 43781975), (865, 21815065), (955, 19759195), (1325, 14241533), (2155, 8756395), (4325, 4363013), (4775, 3951839), (9169, 2058025), (10123, 1864075), (10775, 1751279), (22843, 826075), (33043, 571075), (45845, 411605), (50615, 372815), (74563, 253075), (82321, 229225), (114215, 165215)]