20814950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1033}}^1$

素因数の和:1089

約数の個数: 48

約数和(自身を含む): 43080576

約数和(自身を除く): 22265626

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1033, 1550, 2015, 2066, 4030, 5165, 10075, 10330, 13429, 20150, 25825, 26858, 32023, 51650, 64046, 67145, 134290, 160115, 320230, 335725, 416299, 671450, 800575, 832598, 1601150, 2081495, 4162990, 10407475, 20814950]

約数ペア:

[(1, 20814950), (2, 10407475), (5, 4162990), (10, 2081495), (13, 1601150), (25, 832598), (26, 800575), (31, 671450), (50, 416299), (62, 335725), (65, 320230), (130, 160115), (155, 134290), (310, 67145), (325, 64046), (403, 51650), (650, 32023), (775, 26858), (806, 25825), (1033, 20150), (1550, 13429), (2015, 10330), (2066, 10075), (4030, 5165)]