21345010

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{659}}^1$

素因数の和:786

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18571790

約数列:

[1, 2, 5, 10, 41, 79, 82, 158, 205, 395, 410, 659, 790, 1318, 3239, 3295, 6478, 6590, 16195, 27019, 32390, 52061, 54038, 104122, 135095, 260305, 270190, 520610, 2134501, 4269002, 10672505, 21345010]

約数ペア:

[(1, 21345010), (2, 10672505), (5, 4269002), (10, 2134501), (41, 520610), (79, 270190), (82, 260305), (158, 135095), (205, 104122), (395, 54038), (410, 52061), (659, 32390), (790, 27019), (1318, 16195), (3239, 6590), (3295, 6478)]