64543840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{9839}}^1$

素因数の和:9895

約数の個数: 48

約数和(自身を含む): 156219840

約数和(自身を除く): 91676000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 6560, 9839, 19678, 39356, 49195, 78712, 98390, 157424, 196780, 314848, 393560, 403399, 787120, 806798, 1574240, 1613596, 2016995, 3227192, 4033990, 6454384, 8067980, 12908768, 16135960, 32271920, 64543840]

約数ペア:

[(1, 64543840), (2, 32271920), (4, 16135960), (5, 12908768), (8, 8067980), (10, 6454384), (16, 4033990), (20, 3227192), (32, 2016995), (40, 1613596), (41, 1574240), (80, 806798), (82, 787120), (160, 403399), (164, 393560), (205, 314848), (328, 196780), (410, 157424), (656, 98390), (820, 78712), (1312, 49195), (1640, 39356), (3280, 19678), (6560, 9839)]