81314380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{5639}}^1$

素因数の和:5758

約数の個数: 48

約数和(自身を含む): 197084160

約数和(自身を除く): 115769780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1442, 2060, 2884, 3605, 5639, 7210, 11278, 14420, 22556, 28195, 39473, 56390, 78946, 112780, 157892, 197365, 394730, 580817, 789460, 1161634, 2323268, 2904085, 4065719, 5808170, 8131438, 11616340, 16262876, 20328595, 40657190, 81314380]

約数ペア:

[(1, 81314380), (2, 40657190), (4, 20328595), (5, 16262876), (7, 11616340), (10, 8131438), (14, 5808170), (20, 4065719), (28, 2904085), (35, 2323268), (70, 1161634), (103, 789460), (140, 580817), (206, 394730), (412, 197365), (515, 157892), (721, 112780), (1030, 78946), (1442, 56390), (2060, 39473), (2884, 28195), (3605, 22556), (5639, 14420), (7210, 11278)]