18948040

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1543}}^1$

素因数の和:1861

約数の個数: 32

約数和(自身を含む): 42799680

約数和(自身を除く): 23851640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 1543, 2456, 3070, 3086, 6140, 6172, 7715, 12280, 12344, 15430, 30860, 61720, 473701, 947402, 1894804, 2368505, 3789608, 4737010, 9474020, 18948040]

約数ペア:

[(1, 18948040), (2, 9474020), (4, 4737010), (5, 3789608), (8, 2368505), (10, 1894804), (20, 947402), (40, 473701), (307, 61720), (614, 30860), (1228, 15430), (1535, 12344), (1543, 12280), (2456, 7715), (3070, 6172), (3086, 6140)]