1689384920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1\times {\mathrm{2371}}^1$

素因数の和:2808

約数の個数: 64

約数和(自身を含む): 3893875200

約数和(自身を除く): 2204490280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 379, 470, 758, 940, 1516, 1880, 1895, 2371, 3032, 3790, 4742, 7580, 9484, 11855, 15160, 17813, 18968, 23710, 35626, 47420, 71252, 89065, 94840, 111437, 142504, 178130, 222874, 356260, 445748, 557185, 712520, 891496, 898609, 1114370, 1797218, 2228740, 3594436, 4457480, 4493045, 7188872, 8986090, 17972180, 35944360, 42234623, 84469246, 168938492, 211173115, 337876984, 422346230, 844692460, 1689384920]

約数ペア:

[(1, 1689384920), (2, 844692460), (4, 422346230), (5, 337876984), (8, 211173115), (10, 168938492), (20, 84469246), (40, 42234623), (47, 35944360), (94, 17972180), (188, 8986090), (235, 7188872), (376, 4493045), (379, 4457480), (470, 3594436), (758, 2228740), (940, 1797218), (1516, 1114370), (1880, 898609), (1895, 891496), (2371, 712520), (3032, 557185), (3790, 445748), (4742, 356260), (7580, 222874), (9484, 178130), (11855, 142504), (15160, 111437), (17813, 94840), (18968, 89065), (23710, 71252), (35626, 47420)]