21957160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{173}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 52617600

約数和(自身を除く): 30660440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 167, 173, 190, 334, 346, 380, 668, 692, 760, 835, 865, 1336, 1384, 1670, 1730, 3173, 3287, 3340, 3460, 6346, 6574, 6680, 6920, 12692, 13148, 15865, 16435, 25384, 26296, 28891, 31730, 32870, 57782, 63460, 65740, 115564, 126920, 131480, 144455, 231128, 288910, 548929, 577820, 1097858, 1155640, 2195716, 2744645, 4391432, 5489290, 10978580, 21957160]

約数ペア:

[(1, 21957160), (2, 10978580), (4, 5489290), (5, 4391432), (8, 2744645), (10, 2195716), (19, 1155640), (20, 1097858), (38, 577820), (40, 548929), (76, 288910), (95, 231128), (152, 144455), (167, 131480), (173, 126920), (190, 115564), (334, 65740), (346, 63460), (380, 57782), (668, 32870), (692, 31730), (760, 28891), (835, 26296), (865, 25384), (1336, 16435), (1384, 15865), (1670, 13148), (1730, 12692), (3173, 6920), (3287, 6680), (3340, 6574), (3460, 6346)]