21641320

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3583}}^1$

素因数の和:3745

約数の個数: 32

約数和(自身を含む): 49029120

約数和(自身を除く): 27387800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3583, 6040, 7166, 14332, 17915, 28664, 35830, 71660, 143320, 541033, 1082066, 2164132, 2705165, 4328264, 5410330, 10820660, 21641320]

約数ペア:

[(1, 21641320), (2, 10820660), (4, 5410330), (5, 4328264), (8, 2705165), (10, 2164132), (20, 1082066), (40, 541033), (151, 143320), (302, 71660), (604, 35830), (755, 28664), (1208, 17915), (1510, 14332), (3020, 7166), (3583, 6040)]