21173876

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:200

約数の個数: 36

約数和(自身を含む): 39367104

約数和(自身を除く): 18193228

約数列:

[1, 2, 4, 41, 47, 67, 82, 94, 134, 164, 188, 268, 1681, 1927, 2747, 3149, 3362, 3854, 5494, 6298, 6724, 7708, 10988, 12596, 79007, 112627, 129109, 158014, 225254, 258218, 316028, 450508, 516436, 5293469, 10586938, 21173876]

約数ペア:

[(1, 21173876), (2, 10586938), (4, 5293469), (41, 516436), (47, 450508), (67, 316028), (82, 258218), (94, 225254), (134, 158014), (164, 129109), (188, 112627), (268, 79007), (1681, 12596), (1927, 10988), (2747, 7708), (3149, 6724), (3362, 6298), (3854, 5494)]