1342640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1291}}^1$

素因数の和:1317

約数の個数: 40

約数和(自身を含む): 3364368

約数和(自身を除く): 2021728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1291, 2582, 5164, 6455, 10328, 12910, 16783, 20656, 25820, 33566, 51640, 67132, 83915, 103280, 134264, 167830, 268528, 335660, 671320, 1342640]

約数ペア:

[(1, 1342640), (2, 671320), (4, 335660), (5, 268528), (8, 167830), (10, 134264), (13, 103280), (16, 83915), (20, 67132), (26, 51640), (40, 33566), (52, 25820), (65, 20656), (80, 16783), (104, 12910), (130, 10328), (208, 6455), (260, 5164), (520, 2582), (1040, 1291)]