8438754640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1729253}}^1$

素因数の和:1729327

約数の個数: 40

約数和(自身を含む): 19941757128

約数和(自身を除く): 11503002488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 1729253, 3458506, 6917012, 8646265, 13834024, 17292530, 27668048, 34585060, 69170120, 105484433, 138340240, 210968866, 421937732, 527422165, 843875464, 1054844330, 1687750928, 2109688660, 4219377320, 8438754640]

約数ペア:

[(1, 8438754640), (2, 4219377320), (4, 2109688660), (5, 1687750928), (8, 1054844330), (10, 843875464), (16, 527422165), (20, 421937732), (40, 210968866), (61, 138340240), (80, 105484433), (122, 69170120), (244, 34585060), (305, 27668048), (488, 17292530), (610, 13834024), (976, 8646265), (1220, 6917012), (2440, 3458506), (4880, 1729253)]