21398850

素因数分解:

$2^1\times 3^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{131}}^1$

素因数の和:174

約数の個数: 144

約数和(自身を含む): 65308320

約数和(自身を除く): 43909470

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 25, 27, 30, 33, 45, 50, 54, 55, 66, 75, 90, 99, 110, 121, 131, 135, 150, 165, 198, 225, 242, 262, 270, 275, 297, 330, 363, 393, 450, 495, 550, 594, 605, 655, 675, 726, 786, 825, 990, 1089, 1179, 1210, 1310, 1350, 1441, 1485, 1650, 1815, 1965, 2178, 2358, 2475, 2882, 2970, 3025, 3267, 3275, 3537, 3630, 3930, 4323, 4950, 5445, 5895, 6050, 6534, 6550, 7074, 7205, 7425, 8646, 9075, 9825, 10890, 11790, 12969, 14410, 14850, 15851, 16335, 17685, 18150, 19650, 21615, 25938, 27225, 29475, 31702, 32670, 35370, 36025, 38907, 43230, 47553, 54450, 58950, 64845, 72050, 77814, 79255, 81675, 88425, 95106, 108075, 129690, 142659, 158510, 163350, 176850, 194535, 216150, 237765, 285318, 324225, 389070, 396275, 427977, 475530, 648450, 713295, 792550, 855954, 972675, 1188825, 1426590, 1945350, 2139885, 2377650, 3566475, 4279770, 7132950, 10699425, 21398850]

約数ペア:

[(1, 21398850), (2, 10699425), (3, 7132950), (5, 4279770), (6, 3566475), (9, 2377650), (10, 2139885), (11, 1945350), (15, 1426590), (18, 1188825), (22, 972675), (25, 855954), (27, 792550), (30, 713295), (33, 648450), (45, 475530), (50, 427977), (54, 396275), (55, 389070), (66, 324225), (75, 285318), (90, 237765), (99, 216150), (110, 194535), (121, 176850), (131, 163350), (135, 158510), (150, 142659), (165, 129690), (198, 108075), (225, 95106), (242, 88425), (262, 81675), (270, 79255), (275, 77814), (297, 72050), (330, 64845), (363, 58950), (393, 54450), (450, 47553), (495, 43230), (550, 38907), (594, 36025), (605, 35370), (655, 32670), (675, 31702), (726, 29475), (786, 27225), (825, 25938), (990, 21615), (1089, 19650), (1179, 18150), (1210, 17685), (1310, 16335), (1350, 15851), (1441, 14850), (1485, 14410), (1650, 12969), (1815, 11790), (1965, 10890), (2178, 9825), (2358, 9075), (2475, 8646), (2882, 7425), (2970, 7205), (3025, 7074), (3267, 6550), (3275, 6534), (3537, 6050), (3630, 5895), (3930, 5445), (4323, 4950)]