72157460

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{643}}^1$

素因数の和:864

約数の個数: 48

約数和(自身を含む): 157527552

約数和(自身を除く): 85370092

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 181, 310, 362, 620, 643, 724, 905, 1286, 1810, 2572, 3215, 3620, 5611, 6430, 11222, 12860, 19933, 22444, 28055, 39866, 56110, 79732, 99665, 112220, 116383, 199330, 232766, 398660, 465532, 581915, 1163830, 2327660, 3607873, 7215746, 14431492, 18039365, 36078730, 72157460]

約数ペア:

[(1, 72157460), (2, 36078730), (4, 18039365), (5, 14431492), (10, 7215746), (20, 3607873), (31, 2327660), (62, 1163830), (124, 581915), (155, 465532), (181, 398660), (310, 232766), (362, 199330), (620, 116383), (643, 112220), (724, 99665), (905, 79732), (1286, 56110), (1810, 39866), (2572, 28055), (3215, 22444), (3620, 19933), (5611, 12860), (6430, 11222)]