28238860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{347}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 64251936

約数和(自身を除く): 36013076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 313, 347, 626, 694, 1252, 1388, 1565, 1735, 3130, 3470, 4069, 4511, 6260, 6940, 8138, 9022, 16276, 18044, 20345, 22555, 40690, 45110, 81380, 90220, 108611, 217222, 434444, 543055, 1086110, 1411943, 2172220, 2823886, 5647772, 7059715, 14119430, 28238860]

約数ペア:

[(1, 28238860), (2, 14119430), (4, 7059715), (5, 5647772), (10, 2823886), (13, 2172220), (20, 1411943), (26, 1086110), (52, 543055), (65, 434444), (130, 217222), (260, 108611), (313, 90220), (347, 81380), (626, 45110), (694, 40690), (1252, 22555), (1388, 20345), (1565, 18044), (1735, 16276), (3130, 9022), (3470, 8138), (4069, 6940), (4511, 6260)]