221060720

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 525903840

約数和(自身を除く): 304843120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 109, 202, 218, 251, 404, 436, 502, 505, 545, 808, 872, 1004, 1010, 1090, 1255, 1616, 1744, 2008, 2020, 2180, 2510, 4016, 4040, 4360, 5020, 8080, 8720, 10040, 11009, 20080, 22018, 25351, 27359, 44036, 50702, 54718, 55045, 88072, 101404, 109436, 110090, 126755, 136795, 176144, 202808, 218872, 220180, 253510, 273590, 405616, 437744, 440360, 507020, 547180, 880720, 1014040, 1094360, 2028080, 2188720, 2763259, 5526518, 11053036, 13816295, 22106072, 27632590, 44212144, 55265180, 110530360, 221060720]

約数ペア:

[(1, 221060720), (2, 110530360), (4, 55265180), (5, 44212144), (8, 27632590), (10, 22106072), (16, 13816295), (20, 11053036), (40, 5526518), (80, 2763259), (101, 2188720), (109, 2028080), (202, 1094360), (218, 1014040), (251, 880720), (404, 547180), (436, 507020), (502, 440360), (505, 437744), (545, 405616), (808, 273590), (872, 253510), (1004, 220180), (1010, 218872), (1090, 202808), (1255, 176144), (1616, 136795), (1744, 126755), (2008, 110090), (2020, 109436), (2180, 101404), (2510, 88072), (4016, 55045), (4040, 54718), (4360, 50702), (5020, 44036), (8080, 27359), (8720, 25351), (10040, 22018), (11009, 20080)]