64818640

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{17239}}^1$

素因数の和:17299

約数の個数: 40

約数和(自身を含む): 153918720

約数和(自身を除く): 89100080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 17239, 34478, 68956, 86195, 137912, 172390, 275824, 344780, 689560, 810233, 1379120, 1620466, 3240932, 4051165, 6481864, 8102330, 12963728, 16204660, 32409320, 64818640]

約数ペア:

[(1, 64818640), (2, 32409320), (4, 16204660), (5, 12963728), (8, 8102330), (10, 6481864), (16, 4051165), (20, 3240932), (40, 1620466), (47, 1379120), (80, 810233), (94, 689560), (188, 344780), (235, 275824), (376, 172390), (470, 137912), (752, 86195), (940, 68956), (1880, 34478), (3760, 17239)]