12580640

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1289}}^1$

素因数の和:1365

約数の個数: 48

約数和(自身を含む): 30232440

約数和(自身を除く): 17651800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1289, 1952, 2440, 2578, 4880, 5156, 6445, 9760, 10312, 12890, 20624, 25780, 41248, 51560, 78629, 103120, 157258, 206240, 314516, 393145, 629032, 786290, 1258064, 1572580, 2516128, 3145160, 6290320, 12580640]

約数ペア:

[(1, 12580640), (2, 6290320), (4, 3145160), (5, 2516128), (8, 1572580), (10, 1258064), (16, 786290), (20, 629032), (32, 393145), (40, 314516), (61, 206240), (80, 157258), (122, 103120), (160, 78629), (244, 51560), (305, 41248), (488, 25780), (610, 20624), (976, 12890), (1220, 10312), (1289, 9760), (1952, 6445), (2440, 5156), (2578, 4880)]