408078320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{392383}}^1$

素因数の和:392409

約数の個数: 40

約数和(自身を含む): 1021767936

約数和(自身を除く): 613689616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 392383, 784766, 1569532, 1961915, 3139064, 3923830, 5100979, 6278128, 7847660, 10201958, 15695320, 20403916, 25504895, 31390640, 40807832, 51009790, 81615664, 102019580, 204039160, 408078320]

約数ペア:

[(1, 408078320), (2, 204039160), (4, 102019580), (5, 81615664), (8, 51009790), (10, 40807832), (13, 31390640), (16, 25504895), (20, 20403916), (26, 15695320), (40, 10201958), (52, 7847660), (65, 6278128), (80, 5100979), (104, 3923830), (130, 3139064), (208, 1961915), (260, 1569532), (520, 784766), (1040, 392383)]