20654325

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{827}}^1$

素因数の和:883

約数の個数: 48

約数和(自身を含む): 39015360

約数和(自身を除く): 18361035

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 827, 925, 999, 1665, 2481, 2775, 4135, 4995, 7443, 8325, 12405, 20675, 22329, 24975, 30599, 37215, 62025, 91797, 111645, 152995, 186075, 275391, 458985, 558225, 764975, 826173, 1376955, 2294925, 4130865, 6884775, 20654325]

約数ペア:

[(1, 20654325), (3, 6884775), (5, 4130865), (9, 2294925), (15, 1376955), (25, 826173), (27, 764975), (37, 558225), (45, 458985), (75, 275391), (111, 186075), (135, 152995), (185, 111645), (225, 91797), (333, 62025), (555, 37215), (675, 30599), (827, 24975), (925, 22329), (999, 20675), (1665, 12405), (2481, 8325), (2775, 7443), (4135, 4995)]