15220720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3119}}^1$

素因数の和:3193

約数の個数: 40

約数和(自身を含む): 35979840

約数和(自身を除く): 20759120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3119, 4880, 6238, 12476, 15595, 24952, 31190, 49904, 62380, 124760, 190259, 249520, 380518, 761036, 951295, 1522072, 1902590, 3044144, 3805180, 7610360, 15220720]

約数ペア:

[(1, 15220720), (2, 7610360), (4, 3805180), (5, 3044144), (8, 1902590), (10, 1522072), (16, 951295), (20, 761036), (40, 380518), (61, 249520), (80, 190259), (122, 124760), (244, 62380), (305, 49904), (488, 31190), (610, 24952), (976, 15595), (1220, 12476), (2440, 6238), (3119, 4880)]