20508460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1231}}^1$

素因数の和:1271

約数の個数: 72

約数和(自身を含む): 53089344

約数和(自身を除く): 32580884

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1231, 1666, 2380, 2462, 3332, 4165, 4924, 6155, 8330, 8617, 12310, 16660, 17234, 20927, 24620, 34468, 41854, 43085, 60319, 83708, 86170, 104635, 120638, 146489, 172340, 209270, 241276, 292978, 301595, 418540, 585956, 603190, 732445, 1025423, 1206380, 1464890, 2050846, 2929780, 4101692, 5127115, 10254230, 20508460]

約数ペア:

[(1, 20508460), (2, 10254230), (4, 5127115), (5, 4101692), (7, 2929780), (10, 2050846), (14, 1464890), (17, 1206380), (20, 1025423), (28, 732445), (34, 603190), (35, 585956), (49, 418540), (68, 301595), (70, 292978), (85, 241276), (98, 209270), (119, 172340), (140, 146489), (170, 120638), (196, 104635), (238, 86170), (245, 83708), (340, 60319), (476, 43085), (490, 41854), (595, 34468), (833, 24620), (980, 20927), (1190, 17234), (1231, 16660), (1666, 12310), (2380, 8617), (2462, 8330), (3332, 6155), (4165, 4924)]