18646280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1613}}^1$

素因数の和:1658

約数の個数: 48

約数和(自身を含む): 44594820

約数和(自身を除く): 25948540

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1613, 2312, 2890, 3226, 5780, 6452, 8065, 11560, 12904, 16130, 27421, 32260, 54842, 64520, 109684, 137105, 219368, 274210, 466157, 548420, 932314, 1096840, 1864628, 2330785, 3729256, 4661570, 9323140, 18646280]

約数ペア:

[(1, 18646280), (2, 9323140), (4, 4661570), (5, 3729256), (8, 2330785), (10, 1864628), (17, 1096840), (20, 932314), (34, 548420), (40, 466157), (68, 274210), (85, 219368), (136, 137105), (170, 109684), (289, 64520), (340, 54842), (578, 32260), (680, 27421), (1156, 16130), (1445, 12904), (1613, 11560), (2312, 8065), (2890, 6452), (3226, 5780)]