20128048

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{503}}^1$

素因数の和:613

約数の個数: 40

約数和(自身を含む): 40684896

約数和(自身を除く): 20556848

約数列:

[1, 2, 4, 8, 16, 41, 61, 82, 122, 164, 244, 328, 488, 503, 656, 976, 1006, 2012, 2501, 4024, 5002, 8048, 10004, 20008, 20623, 30683, 40016, 41246, 61366, 82492, 122732, 164984, 245464, 329968, 490928, 1258003, 2516006, 5032012, 10064024, 20128048]

約数ペア:

[(1, 20128048), (2, 10064024), (4, 5032012), (8, 2516006), (16, 1258003), (41, 490928), (61, 329968), (82, 245464), (122, 164984), (164, 122732), (244, 82492), (328, 61366), (488, 41246), (503, 40016), (656, 30683), (976, 20623), (1006, 20008), (2012, 10004), (2501, 8048), (4024, 5002)]