42720520

素因数分解:

$2^3\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1877}}^1$

素因数の和:2457

約数の個数: 32

約数和(自身を含む): 96341400

約数和(自身を除く): 53620880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 569, 1138, 1877, 2276, 2845, 3754, 4552, 5690, 7508, 9385, 11380, 15016, 18770, 22760, 37540, 75080, 1068013, 2136026, 4272052, 5340065, 8544104, 10680130, 21360260, 42720520]

約数ペア:

[(1, 42720520), (2, 21360260), (4, 10680130), (5, 8544104), (8, 5340065), (10, 4272052), (20, 2136026), (40, 1068013), (569, 75080), (1138, 37540), (1877, 22760), (2276, 18770), (2845, 15016), (3754, 11380), (4552, 9385), (5690, 7508)]