21289950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 216

約数和(自身を含む): 69464304

約数和(自身を除く): 48174354

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 17, 18, 22, 23, 25, 30, 33, 34, 45, 46, 50, 51, 55, 66, 69, 75, 85, 90, 99, 102, 110, 115, 121, 138, 150, 153, 165, 170, 187, 198, 207, 225, 230, 242, 253, 255, 275, 306, 330, 345, 363, 374, 391, 414, 425, 450, 495, 506, 510, 550, 561, 575, 605, 690, 726, 759, 765, 782, 825, 850, 935, 990, 1035, 1089, 1122, 1150, 1173, 1210, 1265, 1275, 1518, 1530, 1650, 1683, 1725, 1815, 1870, 1955, 2057, 2070, 2178, 2277, 2346, 2475, 2530, 2550, 2783, 2805, 3025, 3366, 3450, 3519, 3630, 3795, 3825, 3910, 4114, 4301, 4554, 4675, 4950, 5175, 5445, 5566, 5610, 5865, 6050, 6171, 6325, 7038, 7590, 7650, 8349, 8415, 8602, 9075, 9350, 9775, 10285, 10350, 10890, 11385, 11730, 12342, 12650, 12903, 13915, 14025, 16698, 16830, 17595, 18150, 18513, 18975, 19550, 20570, 21505, 22770, 25047, 25806, 27225, 27830, 28050, 29325, 30855, 35190, 37026, 37950, 38709, 41745, 42075, 43010, 47311, 50094, 51425, 54450, 56925, 58650, 61710, 64515, 69575, 77418, 83490, 84150, 87975, 92565, 94622, 102850, 107525, 113850, 125235, 129030, 139150, 141933, 154275, 175950, 185130, 193545, 208725, 215050, 236555, 250470, 283866, 308550, 322575, 387090, 417450, 425799, 462825, 473110, 626175, 645150, 709665, 851598, 925650, 967725, 1182775, 1252350, 1419330, 1935450, 2128995, 2365550, 3548325, 4257990, 7096650, 10644975, 21289950]

約数ペア:

[(1, 21289950), (2, 10644975), (3, 7096650), (5, 4257990), (6, 3548325), (9, 2365550), (10, 2128995), (11, 1935450), (15, 1419330), (17, 1252350), (18, 1182775), (22, 967725), (23, 925650), (25, 851598), (30, 709665), (33, 645150), (34, 626175), (45, 473110), (46, 462825), (50, 425799), (51, 417450), (55, 387090), (66, 322575), (69, 308550), (75, 283866), (85, 250470), (90, 236555), (99, 215050), (102, 208725), (110, 193545), (115, 185130), (121, 175950), (138, 154275), (150, 141933), (153, 139150), (165, 129030), (170, 125235), (187, 113850), (198, 107525), (207, 102850), (225, 94622), (230, 92565), (242, 87975), (253, 84150), (255, 83490), (275, 77418), (306, 69575), (330, 64515), (345, 61710), (363, 58650), (374, 56925), (391, 54450), (414, 51425), (425, 50094), (450, 47311), (495, 43010), (506, 42075), (510, 41745), (550, 38709), (561, 37950), (575, 37026), (605, 35190), (690, 30855), (726, 29325), (759, 28050), (765, 27830), (782, 27225), (825, 25806), (850, 25047), (935, 22770), (990, 21505), (1035, 20570), (1089, 19550), (1122, 18975), (1150, 18513), (1173, 18150), (1210, 17595), (1265, 16830), (1275, 16698), (1518, 14025), (1530, 13915), (1650, 12903), (1683, 12650), (1725, 12342), (1815, 11730), (1870, 11385), (1955, 10890), (2057, 10350), (2070, 10285), (2178, 9775), (2277, 9350), (2346, 9075), (2475, 8602), (2530, 8415), (2550, 8349), (2783, 7650), (2805, 7590), (3025, 7038), (3366, 6325), (3450, 6171), (3519, 6050), (3630, 5865), (3795, 5610), (3825, 5566), (3910, 5445), (4114, 5175), (4301, 4950), (4554, 4675)]