20533160

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:642

約数の個数: 64

約数和(自身を含む): 49420800

約数和(自身を除く): 28887640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 58, 62, 116, 124, 145, 155, 232, 248, 290, 310, 571, 580, 620, 899, 1142, 1160, 1240, 1798, 2284, 2855, 3596, 4495, 4568, 5710, 7192, 8990, 11420, 16559, 17701, 17980, 22840, 33118, 35402, 35960, 66236, 70804, 82795, 88505, 132472, 141608, 165590, 177010, 331180, 354020, 513329, 662360, 708040, 1026658, 2053316, 2566645, 4106632, 5133290, 10266580, 20533160]

約数ペア:

[(1, 20533160), (2, 10266580), (4, 5133290), (5, 4106632), (8, 2566645), (10, 2053316), (20, 1026658), (29, 708040), (31, 662360), (40, 513329), (58, 354020), (62, 331180), (116, 177010), (124, 165590), (145, 141608), (155, 132472), (232, 88505), (248, 82795), (290, 70804), (310, 66236), (571, 35960), (580, 35402), (620, 33118), (899, 22840), (1142, 17980), (1160, 17701), (1240, 16559), (1798, 11420), (2284, 8990), (2855, 7192), (3596, 5710), (4495, 4568)]