20406420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1553}}^1$

素因数の和:1641

約数の個数: 72

約数和(自身を含む): 62787816

約数和(自身を除く): 42381396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1553, 2190, 2628, 3106, 3285, 4380, 4659, 6212, 6570, 7765, 9318, 13140, 13977, 15530, 18636, 23295, 27954, 31060, 46590, 55908, 69885, 93180, 113369, 139770, 226738, 279540, 340107, 453476, 566845, 680214, 1020321, 1133690, 1360428, 1700535, 2040642, 2267380, 3401070, 4081284, 5101605, 6802140, 10203210, 20406420]

約数ペア:

[(1, 20406420), (2, 10203210), (3, 6802140), (4, 5101605), (5, 4081284), (6, 3401070), (9, 2267380), (10, 2040642), (12, 1700535), (15, 1360428), (18, 1133690), (20, 1020321), (30, 680214), (36, 566845), (45, 453476), (60, 340107), (73, 279540), (90, 226738), (146, 139770), (180, 113369), (219, 93180), (292, 69885), (365, 55908), (438, 46590), (657, 31060), (730, 27954), (876, 23295), (1095, 18636), (1314, 15530), (1460, 13977), (1553, 13140), (2190, 9318), (2628, 7765), (3106, 6570), (3285, 6212), (4380, 4659)]