90068020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20753}}^1$

素因数の和:20800

約数の個数: 48

約数和(自身を含む): 223147008

約数和(自身を除く): 133078988

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, 4340, 20753, 41506, 83012, 103765, 145271, 207530, 290542, 415060, 581084, 643343, 726355, 1286686, 1452710, 2573372, 2905420, 3216715, 4503401, 6433430, 9006802, 12866860, 18013604, 22517005, 45034010, 90068020]

約数ペア:

[(1, 90068020), (2, 45034010), (4, 22517005), (5, 18013604), (7, 12866860), (10, 9006802), (14, 6433430), (20, 4503401), (28, 3216715), (31, 2905420), (35, 2573372), (62, 1452710), (70, 1286686), (124, 726355), (140, 643343), (155, 581084), (217, 415060), (310, 290542), (434, 207530), (620, 145271), (868, 103765), (1085, 83012), (2170, 41506), (4340, 20753)]