28039120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:472

約数の個数: 80

約数和(自身を含む): 70508880

約数和(自身を除く): 42469760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 53, 68, 80, 85, 106, 136, 170, 212, 265, 272, 340, 389, 424, 530, 680, 778, 848, 901, 1060, 1360, 1556, 1802, 1945, 2120, 3112, 3604, 3890, 4240, 4505, 6224, 6613, 7208, 7780, 9010, 13226, 14416, 15560, 18020, 20617, 26452, 31120, 33065, 36040, 41234, 52904, 66130, 72080, 82468, 103085, 105808, 132260, 164936, 206170, 264520, 329872, 350489, 412340, 529040, 700978, 824680, 1401956, 1649360, 1752445, 2803912, 3504890, 5607824, 7009780, 14019560, 28039120]

約数ペア:

[(1, 28039120), (2, 14019560), (4, 7009780), (5, 5607824), (8, 3504890), (10, 2803912), (16, 1752445), (17, 1649360), (20, 1401956), (34, 824680), (40, 700978), (53, 529040), (68, 412340), (80, 350489), (85, 329872), (106, 264520), (136, 206170), (170, 164936), (212, 132260), (265, 105808), (272, 103085), (340, 82468), (389, 72080), (424, 66130), (530, 52904), (680, 41234), (778, 36040), (848, 33065), (901, 31120), (1060, 26452), (1360, 20617), (1556, 18020), (1802, 15560), (1945, 14416), (2120, 13226), (3112, 9010), (3604, 7780), (3890, 7208), (4240, 6613), (4505, 6224)]