64704280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{22159}}^1$

素因数の和:22243

約数の個数: 32

約数和(自身を含む): 147585600

約数和(自身を除く): 82881320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 22159, 44318, 88636, 110795, 177272, 221590, 443180, 886360, 1617607, 3235214, 6470428, 8088035, 12940856, 16176070, 32352140, 64704280]

約数ペア:

[(1, 64704280), (2, 32352140), (4, 16176070), (5, 12940856), (8, 8088035), (10, 6470428), (20, 3235214), (40, 1617607), (73, 886360), (146, 443180), (292, 221590), (365, 177272), (584, 110795), (730, 88636), (1460, 44318), (2920, 22159)]