16499960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 38918880

約数和(自身を除く): 22418920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 53, 86, 106, 172, 181, 212, 215, 265, 344, 362, 424, 430, 530, 724, 860, 905, 1060, 1448, 1720, 1810, 2120, 2279, 3620, 4558, 7240, 7783, 9116, 9593, 11395, 15566, 18232, 19186, 22790, 31132, 38372, 38915, 45580, 47965, 62264, 76744, 77830, 91160, 95930, 155660, 191860, 311320, 383720, 412499, 824998, 1649996, 2062495, 3299992, 4124990, 8249980, 16499960]

約数ペア:

[(1, 16499960), (2, 8249980), (4, 4124990), (5, 3299992), (8, 2062495), (10, 1649996), (20, 824998), (40, 412499), (43, 383720), (53, 311320), (86, 191860), (106, 155660), (172, 95930), (181, 91160), (212, 77830), (215, 76744), (265, 62264), (344, 47965), (362, 45580), (424, 38915), (430, 38372), (530, 31132), (724, 22790), (860, 19186), (905, 18232), (1060, 15566), (1448, 11395), (1720, 9593), (1810, 9116), (2120, 7783), (2279, 7240), (3620, 4558)]