399022820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{12781}}^1$

素因数の和:13020

約数の個数: 48

約数和(自身を含む): 962024448

約数和(自身を除く): 563001628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4460, 6244, 7805, 12781, 15610, 25562, 31220, 51124, 63905, 89467, 127810, 178934, 255620, 357868, 447335, 894670, 1789340, 2850163, 5700326, 11400652, 14250815, 19951141, 28501630, 39902282, 57003260, 79804564, 99755705, 199511410, 399022820]

約数ペア:

[(1, 399022820), (2, 199511410), (4, 99755705), (5, 79804564), (7, 57003260), (10, 39902282), (14, 28501630), (20, 19951141), (28, 14250815), (35, 11400652), (70, 5700326), (140, 2850163), (223, 1789340), (446, 894670), (892, 447335), (1115, 357868), (1561, 255620), (2230, 178934), (3122, 127810), (4460, 89467), (6244, 63905), (7805, 51124), (12781, 31220), (15610, 25562)]