20048490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{263}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 65729664

約数和(自身を除く): 45681174

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 55, 63, 66, 70, 77, 90, 99, 105, 110, 121, 126, 154, 165, 198, 210, 231, 242, 263, 315, 330, 363, 385, 462, 495, 526, 605, 630, 693, 726, 770, 789, 847, 990, 1089, 1155, 1210, 1315, 1386, 1578, 1694, 1815, 1841, 2178, 2310, 2367, 2541, 2630, 2893, 3465, 3630, 3682, 3945, 4235, 4734, 5082, 5445, 5523, 5786, 6930, 7623, 7890, 8470, 8679, 9205, 10890, 11046, 11835, 12705, 14465, 15246, 16569, 17358, 18410, 20251, 23670, 25410, 26037, 27615, 28930, 31823, 33138, 38115, 40502, 43395, 52074, 55230, 60753, 63646, 76230, 82845, 86790, 95469, 101255, 121506, 130185, 159115, 165690, 182259, 190938, 202510, 222761, 260370, 286407, 303765, 318230, 364518, 445522, 477345, 572814, 607530, 668283, 911295, 954690, 1113805, 1336566, 1432035, 1822590, 2004849, 2227610, 2864070, 3341415, 4009698, 6682830, 10024245, 20048490]

約数ペア:

[(1, 20048490), (2, 10024245), (3, 6682830), (5, 4009698), (6, 3341415), (7, 2864070), (9, 2227610), (10, 2004849), (11, 1822590), (14, 1432035), (15, 1336566), (18, 1113805), (21, 954690), (22, 911295), (30, 668283), (33, 607530), (35, 572814), (42, 477345), (45, 445522), (55, 364518), (63, 318230), (66, 303765), (70, 286407), (77, 260370), (90, 222761), (99, 202510), (105, 190938), (110, 182259), (121, 165690), (126, 159115), (154, 130185), (165, 121506), (198, 101255), (210, 95469), (231, 86790), (242, 82845), (263, 76230), (315, 63646), (330, 60753), (363, 55230), (385, 52074), (462, 43395), (495, 40502), (526, 38115), (605, 33138), (630, 31823), (693, 28930), (726, 27615), (770, 26037), (789, 25410), (847, 23670), (990, 20251), (1089, 18410), (1155, 17358), (1210, 16569), (1315, 15246), (1386, 14465), (1578, 12705), (1694, 11835), (1815, 11046), (1841, 10890), (2178, 9205), (2310, 8679), (2367, 8470), (2541, 7890), (2630, 7623), (2893, 6930), (3465, 5786), (3630, 5523), (3682, 5445), (3945, 5082), (4235, 4734)]