28705180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1723}}^1$

素因数の和:1763

約数の個数: 72

約数和(自身を含む): 74290608

約数和(自身を除く): 45585428

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, 1666, 1723, 2380, 3332, 3446, 4165, 6892, 8330, 8615, 12061, 16660, 17230, 24122, 29291, 34460, 48244, 58582, 60305, 84427, 117164, 120610, 146455, 168854, 205037, 241220, 292910, 337708, 410074, 422135, 585820, 820148, 844270, 1025185, 1435259, 1688540, 2050370, 2870518, 4100740, 5741036, 7176295, 14352590, 28705180]

約数ペア:

[(1, 28705180), (2, 14352590), (4, 7176295), (5, 5741036), (7, 4100740), (10, 2870518), (14, 2050370), (17, 1688540), (20, 1435259), (28, 1025185), (34, 844270), (35, 820148), (49, 585820), (68, 422135), (70, 410074), (85, 337708), (98, 292910), (119, 241220), (140, 205037), (170, 168854), (196, 146455), (238, 120610), (245, 117164), (340, 84427), (476, 60305), (490, 58582), (595, 48244), (833, 34460), (980, 29291), (1190, 24122), (1666, 17230), (1723, 16660), (2380, 12061), (3332, 8615), (3446, 8330), (4165, 6892)]