21487731

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1801}}^1$

素因数の和:1942

約数の個数: 16

約数和(自身を含む): 29668128

約数和(自身を除く): 8180397

約数列:

[1, 3, 41, 97, 123, 291, 1801, 3977, 5403, 11931, 73841, 174697, 221523, 524091, 7162577, 21487731]

約数ペア:

[(1, 21487731), (3, 7162577), (41, 524091), (97, 221523), (123, 174697), (291, 73841), (1801, 11931), (3977, 5403)]