19212560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:232

約数の個数: 80

約数和(自身を含む): 47235072

約数和(自身を除く): 28022512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 61, 62, 80, 122, 124, 127, 155, 244, 248, 254, 305, 310, 488, 496, 508, 610, 620, 635, 976, 1016, 1220, 1240, 1270, 1891, 2032, 2440, 2480, 2540, 3782, 3937, 4880, 5080, 7564, 7747, 7874, 9455, 10160, 15128, 15494, 15748, 18910, 19685, 30256, 30988, 31496, 37820, 38735, 39370, 61976, 62992, 75640, 77470, 78740, 123952, 151280, 154940, 157480, 240157, 309880, 314960, 480314, 619760, 960628, 1200785, 1921256, 2401570, 3842512, 4803140, 9606280, 19212560]

約数ペア:

[(1, 19212560), (2, 9606280), (4, 4803140), (5, 3842512), (8, 2401570), (10, 1921256), (16, 1200785), (20, 960628), (31, 619760), (40, 480314), (61, 314960), (62, 309880), (80, 240157), (122, 157480), (124, 154940), (127, 151280), (155, 123952), (244, 78740), (248, 77470), (254, 75640), (305, 62992), (310, 61976), (488, 39370), (496, 38735), (508, 37820), (610, 31496), (620, 30988), (635, 30256), (976, 19685), (1016, 18910), (1220, 15748), (1240, 15494), (1270, 15128), (1891, 10160), (2032, 9455), (2440, 7874), (2480, 7747), (2540, 7564), (3782, 5080), (3937, 4880)]