85640680

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 197668800

約数和(自身を除く): 112028120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 139, 146, 211, 278, 292, 365, 422, 556, 584, 695, 730, 844, 1055, 1112, 1390, 1460, 1688, 2110, 2780, 2920, 4220, 5560, 8440, 10147, 15403, 20294, 29329, 30806, 40588, 50735, 58658, 61612, 77015, 81176, 101470, 117316, 123224, 146645, 154030, 202940, 234632, 293290, 308060, 405880, 586580, 616120, 1173160, 2141017, 4282034, 8564068, 10705085, 17128136, 21410170, 42820340, 85640680]

約数ペア:

[(1, 85640680), (2, 42820340), (4, 21410170), (5, 17128136), (8, 10705085), (10, 8564068), (20, 4282034), (40, 2141017), (73, 1173160), (139, 616120), (146, 586580), (211, 405880), (278, 308060), (292, 293290), (365, 234632), (422, 202940), (556, 154030), (584, 146645), (695, 123224), (730, 117316), (844, 101470), (1055, 81176), (1112, 77015), (1390, 61612), (1460, 58658), (1688, 50735), (2110, 40588), (2780, 30806), (2920, 29329), (4220, 20294), (5560, 15403), (8440, 10147)]