256279860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10243}}^1$

素因数の和:10397

約数の個数: 72

約数和(自身を含む): 783051360

約数和(自身を除く): 526771500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 1251, 1390, 1668, 2085, 2502, 2780, 4170, 5004, 6255, 8340, 10243, 12510, 20486, 25020, 30729, 40972, 51215, 61458, 92187, 102430, 122916, 153645, 184374, 204860, 307290, 368748, 460935, 614580, 921870, 1423777, 1843740, 2847554, 4271331, 5695108, 7118885, 8542662, 12813993, 14237770, 17085324, 21356655, 25627986, 28475540, 42713310, 51255972, 64069965, 85426620, 128139930, 256279860]

約数ペア:

[(1, 256279860), (2, 128139930), (3, 85426620), (4, 64069965), (5, 51255972), (6, 42713310), (9, 28475540), (10, 25627986), (12, 21356655), (15, 17085324), (18, 14237770), (20, 12813993), (30, 8542662), (36, 7118885), (45, 5695108), (60, 4271331), (90, 2847554), (139, 1843740), (180, 1423777), (278, 921870), (417, 614580), (556, 460935), (695, 368748), (834, 307290), (1251, 204860), (1390, 184374), (1668, 153645), (2085, 122916), (2502, 102430), (2780, 92187), (4170, 61458), (5004, 51215), (6255, 40972), (8340, 30729), (10243, 25020), (12510, 20486)]