391448260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{21023}}^1$

素因数の和:21065

約数の個数: 72

約数和(自身を含む): 1006629120

約数和(自身を除く): 615180860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4655, 9310, 18620, 21023, 42046, 84092, 105115, 147161, 210230, 294322, 399437, 420460, 588644, 735805, 798874, 1030127, 1471610, 1597748, 1997185, 2060254, 2796059, 2943220, 3994370, 4120508, 5150635, 5592118, 7988740, 10301270, 11184236, 13980295, 19572413, 20602540, 27960590, 39144826, 55921180, 78289652, 97862065, 195724130, 391448260]

約数ペア:

[(1, 391448260), (2, 195724130), (4, 97862065), (5, 78289652), (7, 55921180), (10, 39144826), (14, 27960590), (19, 20602540), (20, 19572413), (28, 13980295), (35, 11184236), (38, 10301270), (49, 7988740), (70, 5592118), (76, 5150635), (95, 4120508), (98, 3994370), (133, 2943220), (140, 2796059), (190, 2060254), (196, 1997185), (245, 1597748), (266, 1471610), (380, 1030127), (490, 798874), (532, 735805), (665, 588644), (931, 420460), (980, 399437), (1330, 294322), (1862, 210230), (2660, 147161), (3724, 105115), (4655, 84092), (9310, 42046), (18620, 21023)]