21685170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55603}}^1$

素因数の和:55626

約数の個数: 32

約数和(自身を含む): 56048832

約数和(自身を除く): 34363662

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55603, 111206, 166809, 278015, 333618, 556030, 722839, 834045, 1445678, 1668090, 2168517, 3614195, 4337034, 7228390, 10842585, 21685170]

約数ペア:

[(1, 21685170), (2, 10842585), (3, 7228390), (5, 4337034), (6, 3614195), (10, 2168517), (13, 1668090), (15, 1445678), (26, 834045), (30, 722839), (39, 556030), (65, 333618), (78, 278015), (130, 166809), (195, 111206), (390, 55603)]