21892920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:477

約数の個数: 128

約数和(自身を含む): 76377600

約数和(自身を除く): 54484680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 67, 70, 84, 105, 120, 134, 140, 168, 201, 210, 268, 280, 335, 389, 402, 420, 469, 536, 670, 778, 804, 840, 938, 1005, 1167, 1340, 1407, 1556, 1608, 1876, 1945, 2010, 2334, 2345, 2680, 2723, 2814, 3112, 3752, 3890, 4020, 4668, 4690, 5446, 5628, 5835, 7035, 7780, 8040, 8169, 9336, 9380, 10892, 11256, 11670, 13615, 14070, 15560, 16338, 18760, 21784, 23340, 26063, 27230, 28140, 32676, 40845, 46680, 52126, 54460, 56280, 65352, 78189, 81690, 104252, 108920, 130315, 156378, 163380, 182441, 208504, 260630, 312756, 326760, 364882, 390945, 521260, 547323, 625512, 729764, 781890, 912205, 1042520, 1094646, 1459528, 1563780, 1824410, 2189292, 2736615, 3127560, 3648820, 4378584, 5473230, 7297640, 10946460, 21892920]

約数ペア:

[(1, 21892920), (2, 10946460), (3, 7297640), (4, 5473230), (5, 4378584), (6, 3648820), (7, 3127560), (8, 2736615), (10, 2189292), (12, 1824410), (14, 1563780), (15, 1459528), (20, 1094646), (21, 1042520), (24, 912205), (28, 781890), (30, 729764), (35, 625512), (40, 547323), (42, 521260), (56, 390945), (60, 364882), (67, 326760), (70, 312756), (84, 260630), (105, 208504), (120, 182441), (134, 163380), (140, 156378), (168, 130315), (201, 108920), (210, 104252), (268, 81690), (280, 78189), (335, 65352), (389, 56280), (402, 54460), (420, 52126), (469, 46680), (536, 40845), (670, 32676), (778, 28140), (804, 27230), (840, 26063), (938, 23340), (1005, 21784), (1167, 18760), (1340, 16338), (1407, 15560), (1556, 14070), (1608, 13615), (1876, 11670), (1945, 11256), (2010, 10892), (2334, 9380), (2345, 9336), (2680, 8169), (2723, 8040), (2814, 7780), (3112, 7035), (3752, 5835), (3890, 5628), (4020, 5446), (4668, 4690)]