21533260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4157}}^1$

素因数の和:4210

約数の個数: 48

約数和(自身を含む): 53089344

約数和(自身を除く): 31556084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4157, 5180, 8314, 16628, 20785, 29099, 41570, 58198, 83140, 116396, 145495, 153809, 290990, 307618, 581980, 615236, 769045, 1076663, 1538090, 2153326, 3076180, 4306652, 5383315, 10766630, 21533260]

約数ペア:

[(1, 21533260), (2, 10766630), (4, 5383315), (5, 4306652), (7, 3076180), (10, 2153326), (14, 1538090), (20, 1076663), (28, 769045), (35, 615236), (37, 581980), (70, 307618), (74, 290990), (140, 153809), (148, 145495), (185, 116396), (259, 83140), (370, 58198), (518, 41570), (740, 29099), (1036, 20785), (1295, 16628), (2590, 8314), (4157, 5180)]