99870220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2039}}^1$

素因数の和:2158

約数の個数: 48

約数和(自身を含む): 219340800

約数和(自身を除く): 119470580

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 620, 790, 1580, 2039, 2449, 4078, 4898, 8156, 9796, 10195, 12245, 20390, 24490, 40780, 48980, 63209, 126418, 161081, 252836, 316045, 322162, 632090, 644324, 805405, 1264180, 1610810, 3221620, 4993511, 9987022, 19974044, 24967555, 49935110, 99870220]

約数ペア:

[(1, 99870220), (2, 49935110), (4, 24967555), (5, 19974044), (10, 9987022), (20, 4993511), (31, 3221620), (62, 1610810), (79, 1264180), (124, 805405), (155, 644324), (158, 632090), (310, 322162), (316, 316045), (395, 252836), (620, 161081), (790, 126418), (1580, 63209), (2039, 48980), (2449, 40780), (4078, 24490), (4898, 20390), (8156, 12245), (9796, 10195)]