21505890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{102409}}^1$

素因数の和:102426

約数の個数: 32

約数和(自身を含む): 58988160

約数和(自身を除く): 37482270

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 102409, 204818, 307227, 512045, 614454, 716863, 1024090, 1433726, 1536135, 2150589, 3072270, 3584315, 4301178, 7168630, 10752945, 21505890]

約数ペア:

[(1, 21505890), (2, 10752945), (3, 7168630), (5, 4301178), (6, 3584315), (7, 3072270), (10, 2150589), (14, 1536135), (15, 1433726), (21, 1024090), (30, 716863), (35, 614454), (42, 512045), (70, 307227), (105, 204818), (210, 102409)]