12991980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{971}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 36578304

約数和(自身を除く): 23586324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 971, 1115, 1338, 1942, 2230, 2676, 2913, 3345, 3884, 4460, 4855, 5826, 6690, 9710, 11652, 13380, 14565, 19420, 29130, 58260, 216533, 433066, 649599, 866132, 1082665, 1299198, 2165330, 2598396, 3247995, 4330660, 6495990, 12991980]

約数ペア:

[(1, 12991980), (2, 6495990), (3, 4330660), (4, 3247995), (5, 2598396), (6, 2165330), (10, 1299198), (12, 1082665), (15, 866132), (20, 649599), (30, 433066), (60, 216533), (223, 58260), (446, 29130), (669, 19420), (892, 14565), (971, 13380), (1115, 11652), (1338, 9710), (1942, 6690), (2230, 5826), (2676, 4855), (2913, 4460), (3345, 3884)]