80939450

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:783

約数の個数: 48

約数和(自身を含む): 157608960

約数和(自身を除く): 76669510

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 79, 155, 158, 310, 395, 661, 775, 790, 1322, 1550, 1975, 2449, 3305, 3950, 4898, 6610, 12245, 16525, 20491, 24490, 33050, 40982, 52219, 61225, 102455, 104438, 122450, 204910, 261095, 512275, 522190, 1024550, 1305475, 1618789, 2610950, 3237578, 8093945, 16187890, 40469725, 80939450]

約数ペア:

[(1, 80939450), (2, 40469725), (5, 16187890), (10, 8093945), (25, 3237578), (31, 2610950), (50, 1618789), (62, 1305475), (79, 1024550), (155, 522190), (158, 512275), (310, 261095), (395, 204910), (661, 122450), (775, 104438), (790, 102455), (1322, 61225), (1550, 52219), (1975, 40982), (2449, 33050), (3305, 24490), (3950, 20491), (4898, 16525), (6610, 12245)]