28891845

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 52416000

約数和(自身を除く): 23524155

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 139, 149, 155, 279, 417, 447, 465, 695, 745, 1251, 1341, 1395, 2085, 2235, 4309, 4619, 6255, 6705, 12927, 13857, 20711, 21545, 23095, 38781, 41571, 62133, 64635, 69285, 103555, 186399, 193905, 207855, 310665, 642041, 931995, 1926123, 3210205, 5778369, 9630615, 28891845]

約数ペア:

[(1, 28891845), (3, 9630615), (5, 5778369), (9, 3210205), (15, 1926123), (31, 931995), (45, 642041), (93, 310665), (139, 207855), (149, 193905), (155, 186399), (279, 103555), (417, 69285), (447, 64635), (465, 62133), (695, 41571), (745, 38781), (1251, 23095), (1341, 21545), (1395, 20711), (2085, 13857), (2235, 12927), (4309, 6705), (4619, 6255)]