28122220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:203

約数の個数: 96

約数和(自身を含む): 71245440

約数和(自身を除く): 43123220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 61, 70, 74, 89, 122, 140, 148, 178, 185, 244, 259, 305, 356, 370, 427, 445, 518, 610, 623, 740, 854, 890, 1036, 1220, 1246, 1295, 1708, 1780, 2135, 2257, 2492, 2590, 3115, 3293, 4270, 4514, 5180, 5429, 6230, 6586, 8540, 9028, 10858, 11285, 12460, 13172, 15799, 16465, 21716, 22570, 23051, 27145, 31598, 32930, 38003, 45140, 46102, 54290, 63196, 65860, 76006, 78995, 92204, 108580, 115255, 152012, 157990, 190015, 200873, 230510, 315980, 380030, 401746, 461020, 760060, 803492, 1004365, 1406111, 2008730, 2812222, 4017460, 5624444, 7030555, 14061110, 28122220]

約数ペア:

[(1, 28122220), (2, 14061110), (4, 7030555), (5, 5624444), (7, 4017460), (10, 2812222), (14, 2008730), (20, 1406111), (28, 1004365), (35, 803492), (37, 760060), (61, 461020), (70, 401746), (74, 380030), (89, 315980), (122, 230510), (140, 200873), (148, 190015), (178, 157990), (185, 152012), (244, 115255), (259, 108580), (305, 92204), (356, 78995), (370, 76006), (427, 65860), (445, 63196), (518, 54290), (610, 46102), (623, 45140), (740, 38003), (854, 32930), (890, 31598), (1036, 27145), (1220, 23051), (1246, 22570), (1295, 21716), (1708, 16465), (1780, 15799), (2135, 13172), (2257, 12460), (2492, 11285), (2590, 10858), (3115, 9028), (3293, 8540), (4270, 6586), (4514, 6230), (5180, 5429)]