18458020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4253}}^1$

素因数の和:4300

約数の個数: 48

約数和(自身を含む): 45739008

約数和(自身を除く): 27280988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4253, 4340, 8506, 17012, 21265, 29771, 42530, 59542, 85060, 119084, 131843, 148855, 263686, 297710, 527372, 595420, 659215, 922901, 1318430, 1845802, 2636860, 3691604, 4614505, 9229010, 18458020]

約数ペア:

[(1, 18458020), (2, 9229010), (4, 4614505), (5, 3691604), (7, 2636860), (10, 1845802), (14, 1318430), (20, 922901), (28, 659215), (31, 595420), (35, 527372), (62, 297710), (70, 263686), (124, 148855), (140, 131843), (155, 119084), (217, 85060), (310, 59542), (434, 42530), (620, 29771), (868, 21265), (1085, 17012), (2170, 8506), (4253, 4340)]