20211786

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3413}}^1$

素因数の和:3475

約数の個数: 48

約数和(自身を含む): 51128064

約数和(自身を除く): 30916278

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 63, 94, 126, 141, 282, 329, 423, 658, 846, 987, 1974, 2961, 3413, 5922, 6826, 10239, 20478, 23891, 30717, 47782, 61434, 71673, 143346, 160411, 215019, 320822, 430038, 481233, 962466, 1122877, 1443699, 2245754, 2887398, 3368631, 6737262, 10105893, 20211786]

約数ペア:

[(1, 20211786), (2, 10105893), (3, 6737262), (6, 3368631), (7, 2887398), (9, 2245754), (14, 1443699), (18, 1122877), (21, 962466), (42, 481233), (47, 430038), (63, 320822), (94, 215019), (126, 160411), (141, 143346), (282, 71673), (329, 61434), (423, 47782), (658, 30717), (846, 23891), (987, 20478), (1974, 10239), (2961, 6826), (3413, 5922)]