12305140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 27095040

約数和(自身を除く): 14789900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 223, 310, 356, 445, 446, 620, 890, 892, 1115, 1780, 2230, 2759, 4460, 5518, 6913, 11036, 13795, 13826, 19847, 27590, 27652, 34565, 39694, 55180, 69130, 79388, 99235, 138260, 198470, 396940, 615257, 1230514, 2461028, 3076285, 6152570, 12305140]

約数ペア:

[(1, 12305140), (2, 6152570), (4, 3076285), (5, 2461028), (10, 1230514), (20, 615257), (31, 396940), (62, 198470), (89, 138260), (124, 99235), (155, 79388), (178, 69130), (223, 55180), (310, 39694), (356, 34565), (445, 27652), (446, 27590), (620, 19847), (890, 13826), (892, 13795), (1115, 11036), (1780, 6913), (2230, 5518), (2759, 4460)]