19635521720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{41213}}^1$

素因数の和:41544

約数の個数: 64

約数和(自身を含む): 45371668320

約数和(自身を除く): 25736146600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 277, 344, 430, 554, 860, 1108, 1385, 1720, 2216, 2770, 5540, 11080, 11911, 23822, 41213, 47644, 59555, 82426, 95288, 119110, 164852, 206065, 238220, 329704, 412130, 476440, 824260, 1648520, 1772159, 3544318, 7088636, 8860795, 11416001, 14177272, 17721590, 22832002, 35443180, 45664004, 57080005, 70886360, 91328008, 114160010, 228320020, 456640040, 490888043, 981776086, 1963552172, 2454440215, 3927104344, 4908880430, 9817760860, 19635521720]

約数ペア:

[(1, 19635521720), (2, 9817760860), (4, 4908880430), (5, 3927104344), (8, 2454440215), (10, 1963552172), (20, 981776086), (40, 490888043), (43, 456640040), (86, 228320020), (172, 114160010), (215, 91328008), (277, 70886360), (344, 57080005), (430, 45664004), (554, 35443180), (860, 22832002), (1108, 17721590), (1385, 14177272), (1720, 11416001), (2216, 8860795), (2770, 7088636), (5540, 3544318), (11080, 1772159), (11911, 1648520), (23822, 824260), (41213, 476440), (47644, 412130), (59555, 329704), (82426, 238220), (95288, 206065), (119110, 164852)]