396461440

素因数分解:

$2^7\times 5^1\times {\mathrm{619471}}^1$

素因数の和:619490

約数の個数: 32

約数和(自身を含む): 947792160

約数和(自身を除く): 551330720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 619471, 1238942, 2477884, 3097355, 4955768, 6194710, 9911536, 12389420, 19823072, 24778840, 39646144, 49557680, 79292288, 99115360, 198230720, 396461440]

約数ペア:

[(1, 396461440), (2, 198230720), (4, 99115360), (5, 79292288), (8, 49557680), (10, 39646144), (16, 24778840), (20, 19823072), (32, 12389420), (40, 9911536), (64, 6194710), (80, 4955768), (128, 3097355), (160, 2477884), (320, 1238942), (640, 619471)]