398320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 999936

約数和(自身を除く): 601616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 383, 520, 766, 1040, 1532, 1915, 3064, 3830, 4979, 6128, 7660, 9958, 15320, 19916, 24895, 30640, 39832, 49790, 79664, 99580, 199160, 398320]

約数ペア:

[(1, 398320), (2, 199160), (4, 99580), (5, 79664), (8, 49790), (10, 39832), (13, 30640), (16, 24895), (20, 19916), (26, 15320), (40, 9958), (52, 7660), (65, 6128), (80, 4979), (104, 3830), (130, 3064), (208, 1915), (260, 1532), (383, 1040), (520, 766)]