398713980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{135617}}^1$

素因数の和:135643

約数の個数: 72

約数和(自身を含む): 1298677968

約数和(自身を除く): 899963988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 135617, 271234, 406851, 542468, 678085, 813702, 949319, 1356170, 1627404, 1898638, 2034255, 2712340, 2847957, 3797276, 4068510, 4746595, 5695914, 6645233, 8137020, 9493190, 11391828, 13290466, 14239785, 18986380, 19935699, 26580932, 28479570, 33226165, 39871398, 56959140, 66452330, 79742796, 99678495, 132904660, 199356990, 398713980]

約数ペア:

[(1, 398713980), (2, 199356990), (3, 132904660), (4, 99678495), (5, 79742796), (6, 66452330), (7, 56959140), (10, 39871398), (12, 33226165), (14, 28479570), (15, 26580932), (20, 19935699), (21, 18986380), (28, 14239785), (30, 13290466), (35, 11391828), (42, 9493190), (49, 8137020), (60, 6645233), (70, 5695914), (84, 4746595), (98, 4068510), (105, 3797276), (140, 2847957), (147, 2712340), (196, 2034255), (210, 1898638), (245, 1627404), (294, 1356170), (420, 949319), (490, 813702), (588, 678085), (735, 542468), (980, 406851), (1470, 271234), (2940, 135617)]