19797520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14557}}^1$

素因数の和:14587

約数の個数: 40

約数和(自身を含む): 48740184

約数和(自身を除く): 28942664

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14557, 29114, 58228, 72785, 116456, 145570, 232912, 247469, 291140, 494938, 582280, 989876, 1164560, 1237345, 1979752, 2474690, 3959504, 4949380, 9898760, 19797520]

約数ペア:

[(1, 19797520), (2, 9898760), (4, 4949380), (5, 3959504), (8, 2474690), (10, 1979752), (16, 1237345), (17, 1164560), (20, 989876), (34, 582280), (40, 494938), (68, 291140), (80, 247469), (85, 232912), (136, 145570), (170, 116456), (272, 72785), (340, 58228), (680, 29114), (1360, 14557)]