21516964

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18743}}^1$

素因数の和:18795

約数の個数: 24

約数和(自身を含む): 44085888

約数和(自身を除く): 22568924

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18743, 37486, 74972, 131201, 262402, 524804, 768463, 1536926, 3073852, 5379241, 10758482, 21516964]

約数ペア:

[(1, 21516964), (2, 10758482), (4, 5379241), (7, 3073852), (14, 1536926), (28, 768463), (41, 524804), (82, 262402), (164, 131201), (287, 74972), (574, 37486), (1148, 18743)]