18739965

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 31260672

約数和(自身を除く): 12520707

約数列:

[1, 3, 5, 15, 31, 93, 155, 191, 211, 465, 573, 633, 955, 1055, 2865, 3165, 5921, 6541, 17763, 19623, 29605, 32705, 40301, 88815, 98115, 120903, 201505, 604515, 1249331, 3747993, 6246655, 18739965]

約数ペア:

[(1, 18739965), (3, 6246655), (5, 3747993), (15, 1249331), (31, 604515), (93, 201505), (155, 120903), (191, 98115), (211, 88815), (465, 40301), (573, 32705), (633, 29605), (955, 19623), (1055, 17763), (2865, 6541), (3165, 5921)]