642251980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{10159}}^1$

素因数の和:10306

約数の個数: 48

約数和(自身を含む): 1408176000

約数和(自身を除く): 765924020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 145, 218, 290, 436, 545, 580, 1090, 2180, 3161, 6322, 10159, 12644, 15805, 20318, 31610, 40636, 50795, 63220, 101590, 203180, 294611, 589222, 1107331, 1178444, 1473055, 2214662, 2946110, 4429324, 5536655, 5892220, 11073310, 22146620, 32112599, 64225198, 128450396, 160562995, 321125990, 642251980]

約数ペア:

[(1, 642251980), (2, 321125990), (4, 160562995), (5, 128450396), (10, 64225198), (20, 32112599), (29, 22146620), (58, 11073310), (109, 5892220), (116, 5536655), (145, 4429324), (218, 2946110), (290, 2214662), (436, 1473055), (545, 1178444), (580, 1107331), (1090, 589222), (2180, 294611), (3161, 203180), (6322, 101590), (10159, 63220), (12644, 50795), (15805, 40636), (20318, 31610)]