156778420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1\times {\mathrm{1009}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 349710480

約数和(自身を除く): 192932060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 457, 914, 1009, 1828, 2018, 2285, 4036, 4570, 5045, 7769, 9140, 10090, 15538, 17153, 20180, 31076, 34306, 38845, 68612, 77690, 85765, 155380, 171530, 343060, 461113, 922226, 1844452, 2305565, 4611130, 7838921, 9222260, 15677842, 31355684, 39194605, 78389210, 156778420]

約数ペア:

[(1, 156778420), (2, 78389210), (4, 39194605), (5, 31355684), (10, 15677842), (17, 9222260), (20, 7838921), (34, 4611130), (68, 2305565), (85, 1844452), (170, 922226), (340, 461113), (457, 343060), (914, 171530), (1009, 155380), (1828, 85765), (2018, 77690), (2285, 68612), (4036, 38845), (4570, 34306), (5045, 31076), (7769, 20180), (9140, 17153), (10090, 15538)]