21030870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:214

約数の個数: 128

約数和(自身を含む): 62954496

約数和(自身を除く): 41923626

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 43, 51, 70, 85, 86, 102, 105, 119, 129, 137, 170, 210, 215, 238, 255, 258, 274, 301, 357, 411, 430, 510, 595, 602, 645, 685, 714, 731, 822, 903, 959, 1190, 1290, 1370, 1462, 1505, 1785, 1806, 1918, 2055, 2193, 2329, 2877, 3010, 3570, 3655, 4110, 4386, 4515, 4658, 4795, 5117, 5754, 5891, 6987, 7310, 9030, 9590, 10234, 10965, 11645, 11782, 13974, 14385, 15351, 16303, 17673, 21930, 23290, 25585, 28770, 29455, 30702, 32606, 34935, 35346, 41237, 48909, 51170, 58910, 69870, 76755, 81515, 82474, 88365, 97818, 100147, 123711, 153510, 163030, 176730, 200294, 206185, 244545, 247422, 300441, 412370, 489090, 500735, 600882, 618555, 701029, 1001470, 1237110, 1402058, 1502205, 2103087, 3004410, 3505145, 4206174, 7010290, 10515435, 21030870]

約数ペア:

[(1, 21030870), (2, 10515435), (3, 7010290), (5, 4206174), (6, 3505145), (7, 3004410), (10, 2103087), (14, 1502205), (15, 1402058), (17, 1237110), (21, 1001470), (30, 701029), (34, 618555), (35, 600882), (42, 500735), (43, 489090), (51, 412370), (70, 300441), (85, 247422), (86, 244545), (102, 206185), (105, 200294), (119, 176730), (129, 163030), (137, 153510), (170, 123711), (210, 100147), (215, 97818), (238, 88365), (255, 82474), (258, 81515), (274, 76755), (301, 69870), (357, 58910), (411, 51170), (430, 48909), (510, 41237), (595, 35346), (602, 34935), (645, 32606), (685, 30702), (714, 29455), (731, 28770), (822, 25585), (903, 23290), (959, 21930), (1190, 17673), (1290, 16303), (1370, 15351), (1462, 14385), (1505, 13974), (1785, 11782), (1806, 11645), (1918, 10965), (2055, 10234), (2193, 9590), (2329, 9030), (2877, 7310), (3010, 6987), (3570, 5891), (3655, 5754), (4110, 5117), (4386, 4795), (4515, 4658)]