31178655

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 58544640

約数和(自身を除く): 27365985

約数列:

[1, 3, 5, 9, 15, 27, 41, 43, 45, 123, 129, 131, 135, 205, 215, 369, 387, 393, 615, 645, 655, 1107, 1161, 1179, 1763, 1845, 1935, 1965, 3537, 5289, 5371, 5535, 5633, 5805, 5895, 8815, 15867, 16113, 16899, 17685, 26445, 26855, 28165, 47601, 48339, 50697, 79335, 80565, 84495, 145017, 152091, 230953, 238005, 241695, 253485, 692859, 725085, 760455, 1154765, 2078577, 3464295, 6235731, 10392885, 31178655]

約数ペア:

[(1, 31178655), (3, 10392885), (5, 6235731), (9, 3464295), (15, 2078577), (27, 1154765), (41, 760455), (43, 725085), (45, 692859), (123, 253485), (129, 241695), (131, 238005), (135, 230953), (205, 152091), (215, 145017), (369, 84495), (387, 80565), (393, 79335), (615, 50697), (645, 48339), (655, 47601), (1107, 28165), (1161, 26855), (1179, 26445), (1763, 17685), (1845, 16899), (1935, 16113), (1965, 15867), (3537, 8815), (5289, 5895), (5371, 5805), (5535, 5633)]