20914340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 45638208

約数和(自身を除く): 24723868

約数列:

[1, 2, 4, 5, 10, 20, 43, 83, 86, 166, 172, 215, 293, 332, 415, 430, 586, 830, 860, 1172, 1465, 1660, 2930, 3569, 5860, 7138, 12599, 14276, 17845, 24319, 25198, 35690, 48638, 50396, 62995, 71380, 97276, 121595, 125990, 243190, 251980, 486380, 1045717, 2091434, 4182868, 5228585, 10457170, 20914340]

約数ペア:

[(1, 20914340), (2, 10457170), (4, 5228585), (5, 4182868), (10, 2091434), (20, 1045717), (43, 486380), (83, 251980), (86, 243190), (166, 125990), (172, 121595), (215, 97276), (293, 71380), (332, 62995), (415, 50396), (430, 48638), (586, 35690), (830, 25198), (860, 24319), (1172, 17845), (1465, 14276), (1660, 12599), (2930, 7138), (3569, 5860)]