68409540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{977}}^1$

素因数の和:1381

約数の個数: 72

約数和(自身を含む): 208255320

約数和(自身を除く): 139845780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 778, 977, 1167, 1556, 1945, 1954, 2334, 2931, 3501, 3890, 3908, 4668, 4885, 5835, 5862, 7002, 7780, 8793, 9770, 11670, 11724, 14004, 14655, 17505, 17586, 19540, 23340, 29310, 35010, 35172, 43965, 58620, 70020, 87930, 175860, 380053, 760106, 1140159, 1520212, 1900265, 2280318, 3420477, 3800530, 4560636, 5700795, 6840954, 7601060, 11401590, 13681908, 17102385, 22803180, 34204770, 68409540]

約数ペア:

[(1, 68409540), (2, 34204770), (3, 22803180), (4, 17102385), (5, 13681908), (6, 11401590), (9, 7601060), (10, 6840954), (12, 5700795), (15, 4560636), (18, 3800530), (20, 3420477), (30, 2280318), (36, 1900265), (45, 1520212), (60, 1140159), (90, 760106), (180, 380053), (389, 175860), (778, 87930), (977, 70020), (1167, 58620), (1556, 43965), (1945, 35172), (1954, 35010), (2334, 29310), (2931, 23340), (3501, 19540), (3890, 17586), (3908, 17505), (4668, 14655), (4885, 14004), (5835, 11724), (5862, 11670), (7002, 9770), (7780, 8793)]