257027220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2207}}^1$

素因数の和:2869

約数の個数: 72

約数和(自身を含む): 781208064

約数和(自身を除く): 524180844

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 647, 1294, 1941, 2207, 2588, 3235, 3882, 4414, 5823, 6470, 6621, 7764, 8828, 9705, 11035, 11646, 12940, 13242, 19410, 19863, 22070, 23292, 26484, 29115, 33105, 38820, 39726, 44140, 58230, 66210, 79452, 99315, 116460, 132420, 198630, 397260, 1427929, 2855858, 4283787, 5711716, 7139645, 8567574, 12851361, 14279290, 17135148, 21418935, 25702722, 28558580, 42837870, 51405444, 64256805, 85675740, 128513610, 257027220]

約数ペア:

[(1, 257027220), (2, 128513610), (3, 85675740), (4, 64256805), (5, 51405444), (6, 42837870), (9, 28558580), (10, 25702722), (12, 21418935), (15, 17135148), (18, 14279290), (20, 12851361), (30, 8567574), (36, 7139645), (45, 5711716), (60, 4283787), (90, 2855858), (180, 1427929), (647, 397260), (1294, 198630), (1941, 132420), (2207, 116460), (2588, 99315), (3235, 79452), (3882, 66210), (4414, 58230), (5823, 44140), (6470, 39726), (6621, 38820), (7764, 33105), (8828, 29115), (9705, 26484), (11035, 23292), (11646, 22070), (12940, 19863), (13242, 19410)]