18665535

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:228

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 17829825

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 59, 69, 105, 115, 131, 161, 177, 295, 345, 393, 413, 483, 655, 805, 885, 917, 1239, 1357, 1965, 2065, 2415, 2751, 3013, 4071, 4585, 6195, 6785, 7729, 9039, 9499, 13755, 15065, 20355, 21091, 23187, 28497, 38645, 45195, 47495, 54103, 63273, 105455, 115935, 142485, 162309, 177767, 270515, 316365, 533301, 811545, 888835, 1244369, 2666505, 3733107, 6221845, 18665535]

約数ペア:

[(1, 18665535), (3, 6221845), (5, 3733107), (7, 2666505), (15, 1244369), (21, 888835), (23, 811545), (35, 533301), (59, 316365), (69, 270515), (105, 177767), (115, 162309), (131, 142485), (161, 115935), (177, 105455), (295, 63273), (345, 54103), (393, 47495), (413, 45195), (483, 38645), (655, 28497), (805, 23187), (885, 21091), (917, 20355), (1239, 15065), (1357, 13755), (1965, 9499), (2065, 9039), (2415, 7729), (2751, 6785), (3013, 6195), (4071, 4585)]