18543980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:495

約数の個数: 96

約数和(自身を含む): 50125824

約数和(自身を除く): 31581844

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 23, 26, 28, 35, 46, 52, 65, 70, 91, 92, 115, 130, 140, 161, 182, 230, 260, 299, 322, 364, 443, 455, 460, 598, 644, 805, 886, 910, 1196, 1495, 1610, 1772, 1820, 2093, 2215, 2990, 3101, 3220, 4186, 4430, 5759, 5980, 6202, 8372, 8860, 10189, 10465, 11518, 12404, 15505, 20378, 20930, 23036, 28795, 31010, 40313, 40756, 41860, 50945, 57590, 62020, 71323, 80626, 101890, 115180, 132457, 142646, 161252, 201565, 203780, 264914, 285292, 356615, 403130, 529828, 662285, 713230, 806260, 927199, 1324570, 1426460, 1854398, 2649140, 3708796, 4635995, 9271990, 18543980]

約数ペア:

[(1, 18543980), (2, 9271990), (4, 4635995), (5, 3708796), (7, 2649140), (10, 1854398), (13, 1426460), (14, 1324570), (20, 927199), (23, 806260), (26, 713230), (28, 662285), (35, 529828), (46, 403130), (52, 356615), (65, 285292), (70, 264914), (91, 203780), (92, 201565), (115, 161252), (130, 142646), (140, 132457), (161, 115180), (182, 101890), (230, 80626), (260, 71323), (299, 62020), (322, 57590), (364, 50945), (443, 41860), (455, 40756), (460, 40313), (598, 31010), (644, 28795), (805, 23036), (886, 20930), (910, 20378), (1196, 15505), (1495, 12404), (1610, 11518), (1772, 10465), (1820, 10189), (2093, 8860), (2215, 8372), (2990, 6202), (3101, 5980), (3220, 5759), (4186, 4430)]