19601840

素因数分解:

$2^4\times 5^1\times {\mathrm{245023}}^1$

素因数の和:245036

約数の個数: 20

約数和(自身を含む): 45574464

約数和(自身を除く): 25972624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245023, 490046, 980092, 1225115, 1960184, 2450230, 3920368, 4900460, 9800920, 19601840]

約数ペア:

[(1, 19601840), (2, 9800920), (4, 4900460), (5, 3920368), (8, 2450230), (10, 1960184), (16, 1225115), (20, 980092), (40, 490046), (80, 245023)]