400643728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{30649}}^1$

素因数の和:30719

約数の個数: 40

約数和(自身を含む): 836132000

約数和(自身を除く): 435488272

約数列:

[1, 2, 4, 8, 16, 19, 38, 43, 76, 86, 152, 172, 304, 344, 688, 817, 1634, 3268, 6536, 13072, 30649, 61298, 122596, 245192, 490384, 582331, 1164662, 1317907, 2329324, 2635814, 4658648, 5271628, 9317296, 10543256, 21086512, 25040233, 50080466, 100160932, 200321864, 400643728]

約数ペア:

[(1, 400643728), (2, 200321864), (4, 100160932), (8, 50080466), (16, 25040233), (19, 21086512), (38, 10543256), (43, 9317296), (76, 5271628), (86, 4658648), (152, 2635814), (172, 2329324), (304, 1317907), (344, 1164662), (688, 582331), (817, 490384), (1634, 245192), (3268, 122596), (6536, 61298), (13072, 30649)]