18649755

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 15944805

約数列:

[1, 3, 5, 9, 15, 29, 31, 45, 87, 93, 145, 155, 261, 279, 435, 461, 465, 899, 1305, 1383, 1395, 2305, 2697, 4149, 4495, 6915, 8091, 13369, 13485, 14291, 20745, 40107, 40455, 42873, 66845, 71455, 120321, 128619, 200535, 214365, 414439, 601605, 643095, 1243317, 2072195, 3729951, 6216585, 18649755]

約数ペア:

[(1, 18649755), (3, 6216585), (5, 3729951), (9, 2072195), (15, 1243317), (29, 643095), (31, 601605), (45, 414439), (87, 214365), (93, 200535), (145, 128619), (155, 120321), (261, 71455), (279, 66845), (435, 42873), (461, 40455), (465, 40107), (899, 20745), (1305, 14291), (1383, 13485), (1395, 13369), (2305, 8091), (2697, 6915), (4149, 4495)]