221269520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:472

約数の個数: 80

約数和(自身を含む): 526632960

約数和(自身を除く): 305363440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 157, 158, 223, 314, 316, 395, 446, 628, 632, 785, 790, 892, 1115, 1256, 1264, 1570, 1580, 1784, 2230, 2512, 3140, 3160, 3568, 4460, 6280, 6320, 8920, 12403, 12560, 17617, 17840, 24806, 35011, 35234, 49612, 62015, 70022, 70468, 88085, 99224, 124030, 140044, 140936, 175055, 176170, 198448, 248060, 280088, 281872, 350110, 352340, 496120, 560176, 700220, 704680, 992240, 1400440, 1409360, 2765869, 2800880, 5531738, 11063476, 13829345, 22126952, 27658690, 44253904, 55317380, 110634760, 221269520]

約数ペア:

[(1, 221269520), (2, 110634760), (4, 55317380), (5, 44253904), (8, 27658690), (10, 22126952), (16, 13829345), (20, 11063476), (40, 5531738), (79, 2800880), (80, 2765869), (157, 1409360), (158, 1400440), (223, 992240), (314, 704680), (316, 700220), (395, 560176), (446, 496120), (628, 352340), (632, 350110), (785, 281872), (790, 280088), (892, 248060), (1115, 198448), (1256, 176170), (1264, 175055), (1570, 140936), (1580, 140044), (1784, 124030), (2230, 99224), (2512, 88085), (3140, 70468), (3160, 70022), (3568, 62015), (4460, 49612), (6280, 35234), (6320, 35011), (8920, 24806), (12403, 17840), (12560, 17617)]