20408556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{1609}}^1$

素因数の和:1774

約数の個数: 48

約数和(自身を含む): 54817280

約数和(自身を除く): 34408724

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 151, 302, 453, 604, 906, 1057, 1609, 1812, 2114, 3171, 3218, 4228, 4827, 6342, 6436, 9654, 11263, 12684, 19308, 22526, 33789, 45052, 67578, 135156, 242959, 485918, 728877, 971836, 1457754, 1700713, 2915508, 3401426, 5102139, 6802852, 10204278, 20408556]

約数ペア:

[(1, 20408556), (2, 10204278), (3, 6802852), (4, 5102139), (6, 3401426), (7, 2915508), (12, 1700713), (14, 1457754), (21, 971836), (28, 728877), (42, 485918), (84, 242959), (151, 135156), (302, 67578), (453, 45052), (604, 33789), (906, 22526), (1057, 19308), (1609, 12684), (1812, 11263), (2114, 9654), (3171, 6436), (3218, 6342), (4228, 4827)]