19383680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{977}}^1$

素因数の和:1027

約数の個数: 64

約数和(自身を含む): 47882880

約数和(自身を除く): 28499200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 977, 992, 1240, 1954, 1984, 2480, 3908, 3968, 4885, 4960, 7816, 9770, 9920, 15632, 19540, 19840, 30287, 31264, 39080, 60574, 62528, 78160, 121148, 125056, 151435, 156320, 242296, 302870, 312640, 484592, 605740, 625280, 969184, 1211480, 1938368, 2422960, 3876736, 4845920, 9691840, 19383680]

約数ペア:

[(1, 19383680), (2, 9691840), (4, 4845920), (5, 3876736), (8, 2422960), (10, 1938368), (16, 1211480), (20, 969184), (31, 625280), (32, 605740), (40, 484592), (62, 312640), (64, 302870), (80, 242296), (124, 156320), (128, 151435), (155, 125056), (160, 121148), (248, 78160), (310, 62528), (320, 60574), (496, 39080), (620, 31264), (640, 30287), (977, 19840), (992, 19540), (1240, 15632), (1954, 9920), (1984, 9770), (2480, 7816), (3908, 4960), (3968, 4885)]