1312121340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{20887}}^1$

素因数の和:21251

約数の個数: 72

約数和(自身を含む): 3991696800

約数和(自身を除く): 2679575460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 349, 698, 1047, 1396, 1745, 2094, 3141, 3490, 4188, 5235, 6282, 6980, 10470, 12564, 15705, 20887, 20940, 31410, 41774, 62661, 62820, 83548, 104435, 125322, 187983, 208870, 250644, 313305, 375966, 417740, 626610, 751932, 939915, 1253220, 1879830, 3759660, 7289563, 14579126, 21868689, 29158252, 36447815, 43737378, 65606067, 72895630, 87474756, 109343445, 131212134, 145791260, 218686890, 262424268, 328030335, 437373780, 656060670, 1312121340]

約数ペア:

[(1, 1312121340), (2, 656060670), (3, 437373780), (4, 328030335), (5, 262424268), (6, 218686890), (9, 145791260), (10, 131212134), (12, 109343445), (15, 87474756), (18, 72895630), (20, 65606067), (30, 43737378), (36, 36447815), (45, 29158252), (60, 21868689), (90, 14579126), (180, 7289563), (349, 3759660), (698, 1879830), (1047, 1253220), (1396, 939915), (1745, 751932), (2094, 626610), (3141, 417740), (3490, 375966), (4188, 313305), (5235, 250644), (6282, 208870), (6980, 187983), (10470, 125322), (12564, 104435), (15705, 83548), (20887, 62820), (20940, 62661), (31410, 41774)]