81156700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{10273}}^1$

素因数の和:10366

約数の個数: 36

約数和(自身を含む): 178356640

約数和(自身を除く): 97199940

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 10273, 20546, 41092, 51365, 102730, 205460, 256825, 513650, 811567, 1027300, 1623134, 3246268, 4057835, 8115670, 16231340, 20289175, 40578350, 81156700]

約数ペア:

[(1, 81156700), (2, 40578350), (4, 20289175), (5, 16231340), (10, 8115670), (20, 4057835), (25, 3246268), (50, 1623134), (79, 1027300), (100, 811567), (158, 513650), (316, 256825), (395, 205460), (790, 102730), (1580, 51365), (1975, 41092), (3950, 20546), (7900, 10273)]