68788620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1487}}^1$

素因数の和:1759

約数の個数: 72

約数和(自身を含む): 209611584

約数和(自身を除く): 140822964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 514, 771, 1028, 1285, 1487, 1542, 2313, 2570, 2974, 3084, 3855, 4461, 4626, 5140, 5948, 7435, 7710, 8922, 9252, 11565, 13383, 14870, 15420, 17844, 22305, 23130, 26766, 29740, 44610, 46260, 53532, 66915, 89220, 133830, 267660, 382159, 764318, 1146477, 1528636, 1910795, 2292954, 3439431, 3821590, 4585908, 5732385, 6878862, 7643180, 11464770, 13757724, 17197155, 22929540, 34394310, 68788620]

約数ペア:

[(1, 68788620), (2, 34394310), (3, 22929540), (4, 17197155), (5, 13757724), (6, 11464770), (9, 7643180), (10, 6878862), (12, 5732385), (15, 4585908), (18, 3821590), (20, 3439431), (30, 2292954), (36, 1910795), (45, 1528636), (60, 1146477), (90, 764318), (180, 382159), (257, 267660), (514, 133830), (771, 89220), (1028, 66915), (1285, 53532), (1487, 46260), (1542, 44610), (2313, 29740), (2570, 26766), (2974, 23130), (3084, 22305), (3855, 17844), (4461, 15420), (4626, 14870), (5140, 13383), (5948, 11565), (7435, 9252), (7710, 8922)]