18109665

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 37559808

約数和(自身を除く): 19450143

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 49, 63, 105, 129, 147, 191, 215, 245, 301, 315, 387, 441, 573, 645, 735, 903, 955, 1337, 1505, 1719, 1935, 2107, 2205, 2709, 2865, 4011, 4515, 6321, 6685, 8213, 8595, 9359, 10535, 12033, 13545, 18963, 20055, 24639, 28077, 31605, 41065, 46795, 57491, 60165, 73917, 84231, 94815, 123195, 140385, 172473, 287455, 369585, 402437, 421155, 517419, 862365, 1207311, 2012185, 2587095, 3621933, 6036555, 18109665]

約数ペア:

[(1, 18109665), (3, 6036555), (5, 3621933), (7, 2587095), (9, 2012185), (15, 1207311), (21, 862365), (35, 517419), (43, 421155), (45, 402437), (49, 369585), (63, 287455), (105, 172473), (129, 140385), (147, 123195), (191, 94815), (215, 84231), (245, 73917), (301, 60165), (315, 57491), (387, 46795), (441, 41065), (573, 31605), (645, 28077), (735, 24639), (903, 20055), (955, 18963), (1337, 13545), (1505, 12033), (1719, 10535), (1935, 9359), (2107, 8595), (2205, 8213), (2709, 6685), (2865, 6321), (4011, 4515)]