81117680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3533}}^1$

素因数の和:3594

約数の個数: 80

約数和(自身を含む): 220860864

約数和(自身を除く): 139743184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 1148, 1435, 1640, 2296, 2870, 3280, 3533, 4592, 5740, 7066, 11480, 14132, 17665, 22960, 24731, 28264, 35330, 49462, 56528, 70660, 98924, 123655, 141320, 144853, 197848, 247310, 282640, 289706, 395696, 494620, 579412, 724265, 989240, 1013971, 1158824, 1448530, 1978480, 2027942, 2317648, 2897060, 4055884, 5069855, 5794120, 8111768, 10139710, 11588240, 16223536, 20279420, 40558840, 81117680]

約数ペア:

[(1, 81117680), (2, 40558840), (4, 20279420), (5, 16223536), (7, 11588240), (8, 10139710), (10, 8111768), (14, 5794120), (16, 5069855), (20, 4055884), (28, 2897060), (35, 2317648), (40, 2027942), (41, 1978480), (56, 1448530), (70, 1158824), (80, 1013971), (82, 989240), (112, 724265), (140, 579412), (164, 494620), (205, 395696), (280, 289706), (287, 282640), (328, 247310), (410, 197848), (560, 144853), (574, 141320), (656, 123655), (820, 98924), (1148, 70660), (1435, 56528), (1640, 49462), (2296, 35330), (2870, 28264), (3280, 24731), (3533, 22960), (4592, 17665), (5740, 14132), (7066, 11480)]