8249980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 18162144

約数和(自身を除く): 9912164

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 181, 212, 215, 265, 362, 430, 530, 724, 860, 905, 1060, 1810, 2279, 3620, 4558, 7783, 9116, 9593, 11395, 15566, 19186, 22790, 31132, 38372, 38915, 45580, 47965, 77830, 95930, 155660, 191860, 412499, 824998, 1649996, 2062495, 4124990, 8249980]

約数ペア:

[(1, 8249980), (2, 4124990), (4, 2062495), (5, 1649996), (10, 824998), (20, 412499), (43, 191860), (53, 155660), (86, 95930), (106, 77830), (172, 47965), (181, 45580), (212, 38915), (215, 38372), (265, 31132), (362, 22790), (430, 19186), (530, 15566), (724, 11395), (860, 9593), (905, 9116), (1060, 7783), (1810, 4558), (2279, 3620)]