19173520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3929}}^1$

素因数の和:4003

約数の個数: 40

約数和(自身を含む): 45320760

約数和(自身を除く): 26147240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3929, 4880, 7858, 15716, 19645, 31432, 39290, 62864, 78580, 157160, 239669, 314320, 479338, 958676, 1198345, 1917352, 2396690, 3834704, 4793380, 9586760, 19173520]

約数ペア:

[(1, 19173520), (2, 9586760), (4, 4793380), (5, 3834704), (8, 2396690), (10, 1917352), (16, 1198345), (20, 958676), (40, 479338), (61, 314320), (80, 239669), (122, 157160), (244, 78580), (305, 62864), (488, 39290), (610, 31432), (976, 19645), (1220, 15716), (2440, 7858), (3929, 4880)]