72790640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{69991}}^1$

素因数の和:70017

約数の個数: 40

約数和(自身を含む): 182259168

約数和(自身を除く): 109468528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 69991, 139982, 279964, 349955, 559928, 699910, 909883, 1119856, 1399820, 1819766, 2799640, 3639532, 4549415, 5599280, 7279064, 9098830, 14558128, 18197660, 36395320, 72790640]

約数ペア:

[(1, 72790640), (2, 36395320), (4, 18197660), (5, 14558128), (8, 9098830), (10, 7279064), (13, 5599280), (16, 4549415), (20, 3639532), (26, 2799640), (40, 1819766), (52, 1399820), (65, 1119856), (80, 909883), (104, 699910), (130, 559928), (208, 349955), (260, 279964), (520, 139982), (1040, 69991)]