19777545

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 36796032

約数和(自身を除く): 17018487

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 103, 153, 251, 255, 309, 515, 753, 765, 927, 1255, 1545, 1751, 2259, 3765, 4267, 4635, 5253, 8755, 11295, 12801, 15759, 21335, 25853, 26265, 38403, 64005, 77559, 78795, 129265, 192015, 232677, 387795, 439501, 1163385, 1318503, 2197505, 3955509, 6592515, 19777545]

約数ペア:

[(1, 19777545), (3, 6592515), (5, 3955509), (9, 2197505), (15, 1318503), (17, 1163385), (45, 439501), (51, 387795), (85, 232677), (103, 192015), (153, 129265), (251, 78795), (255, 77559), (309, 64005), (515, 38403), (753, 26265), (765, 25853), (927, 21335), (1255, 15759), (1545, 12801), (1751, 11295), (2259, 8755), (3765, 5253), (4267, 4635)]