138971720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 320112000

約数和(自身を除く): 181140280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 103, 178, 206, 356, 379, 412, 445, 515, 712, 758, 824, 890, 1030, 1516, 1780, 1895, 2060, 3032, 3560, 3790, 4120, 7580, 9167, 15160, 18334, 33731, 36668, 39037, 45835, 67462, 73336, 78074, 91670, 134924, 156148, 168655, 183340, 195185, 269848, 312296, 337310, 366680, 390370, 674620, 780740, 1349240, 1561480, 3474293, 6948586, 13897172, 17371465, 27794344, 34742930, 69485860, 138971720]

約数ペア:

[(1, 138971720), (2, 69485860), (4, 34742930), (5, 27794344), (8, 17371465), (10, 13897172), (20, 6948586), (40, 3474293), (89, 1561480), (103, 1349240), (178, 780740), (206, 674620), (356, 390370), (379, 366680), (412, 337310), (445, 312296), (515, 269848), (712, 195185), (758, 183340), (824, 168655), (890, 156148), (1030, 134924), (1516, 91670), (1780, 78074), (1895, 73336), (2060, 67462), (3032, 45835), (3560, 39037), (3790, 36668), (4120, 33731), (7580, 18334), (9167, 15160)]