28222220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 69854400

約数和(自身を除く): 41632180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 29, 38, 52, 58, 65, 76, 95, 116, 130, 145, 190, 197, 247, 260, 290, 377, 380, 394, 494, 551, 580, 754, 788, 985, 988, 1102, 1235, 1508, 1885, 1970, 2204, 2470, 2561, 2755, 3743, 3770, 3940, 4940, 5122, 5510, 5713, 7163, 7486, 7540, 10244, 11020, 11426, 12805, 14326, 14972, 18715, 22852, 25610, 28565, 28652, 35815, 37430, 48659, 51220, 57130, 71630, 74269, 74860, 97318, 108547, 114260, 143260, 148538, 194636, 217094, 243295, 297076, 371345, 434188, 486590, 542735, 742690, 973180, 1085470, 1411111, 1485380, 2170940, 2822222, 5644444, 7055555, 14111110, 28222220]

約数ペア:

[(1, 28222220), (2, 14111110), (4, 7055555), (5, 5644444), (10, 2822222), (13, 2170940), (19, 1485380), (20, 1411111), (26, 1085470), (29, 973180), (38, 742690), (52, 542735), (58, 486590), (65, 434188), (76, 371345), (95, 297076), (116, 243295), (130, 217094), (145, 194636), (190, 148538), (197, 143260), (247, 114260), (260, 108547), (290, 97318), (377, 74860), (380, 74269), (394, 71630), (494, 57130), (551, 51220), (580, 48659), (754, 37430), (788, 35815), (985, 28652), (988, 28565), (1102, 25610), (1235, 22852), (1508, 18715), (1885, 14972), (1970, 14326), (2204, 12805), (2470, 11426), (2561, 11020), (2755, 10244), (3743, 7540), (3770, 7486), (3940, 7163), (4940, 5713), (5122, 5510)]