16493480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 38782800

約数和(自身を除く): 22289320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 89, 113, 164, 178, 205, 226, 328, 356, 410, 445, 452, 565, 712, 820, 890, 904, 1130, 1640, 1780, 2260, 3560, 3649, 4520, 4633, 7298, 9266, 10057, 14596, 18245, 18532, 20114, 23165, 29192, 36490, 37064, 40228, 46330, 50285, 72980, 80456, 92660, 100570, 145960, 185320, 201140, 402280, 412337, 824674, 1649348, 2061685, 3298696, 4123370, 8246740, 16493480]

約数ペア:

[(1, 16493480), (2, 8246740), (4, 4123370), (5, 3298696), (8, 2061685), (10, 1649348), (20, 824674), (40, 412337), (41, 402280), (82, 201140), (89, 185320), (113, 145960), (164, 100570), (178, 92660), (205, 80456), (226, 72980), (328, 50285), (356, 46330), (410, 40228), (445, 37064), (452, 36490), (565, 29192), (712, 23165), (820, 20114), (890, 18532), (904, 18245), (1130, 14596), (1640, 10057), (1780, 9266), (2260, 7298), (3560, 4633), (3649, 4520)]