198168680

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{12113}}^1$

素因数の和:12533

約数の個数: 32

約数和(自身を含む): 447006600

約数和(自身を除く): 248837920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 12113, 16360, 24226, 48452, 60565, 96904, 121130, 242260, 484520, 4954217, 9908434, 19816868, 24771085, 39633736, 49542170, 99084340, 198168680]

約数ペア:

[(1, 198168680), (2, 99084340), (4, 49542170), (5, 39633736), (8, 24771085), (10, 19816868), (20, 9908434), (40, 4954217), (409, 484520), (818, 242260), (1636, 121130), (2045, 96904), (3272, 60565), (4090, 48452), (8180, 24226), (12113, 16360)]