161190640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154991}}^1$

素因数の和:155017

約数の個数: 40

約数和(自身を含む): 403599168

約数和(自身を除く): 242408528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 154991, 309982, 619964, 774955, 1239928, 1549910, 2014883, 2479856, 3099820, 4029766, 6199640, 8059532, 10074415, 12399280, 16119064, 20148830, 32238128, 40297660, 80595320, 161190640]

約数ペア:

[(1, 161190640), (2, 80595320), (4, 40297660), (5, 32238128), (8, 20148830), (10, 16119064), (13, 12399280), (16, 10074415), (20, 8059532), (26, 6199640), (40, 4029766), (52, 3099820), (65, 2479856), (80, 2014883), (104, 1549910), (130, 1239928), (208, 774955), (260, 619964), (520, 309982), (1040, 154991)]