21209520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1319}}^1$

素因数の和:1402

約数の個数: 80

約数和(自身を含む): 66781440

約数和(自身を除く): 45571920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 67, 80, 120, 134, 201, 240, 268, 335, 402, 536, 670, 804, 1005, 1072, 1319, 1340, 1608, 2010, 2638, 2680, 3216, 3957, 4020, 5276, 5360, 6595, 7914, 8040, 10552, 13190, 15828, 16080, 19785, 21104, 26380, 31656, 39570, 52760, 63312, 79140, 88373, 105520, 158280, 176746, 265119, 316560, 353492, 441865, 530238, 706984, 883730, 1060476, 1325595, 1413968, 1767460, 2120952, 2651190, 3534920, 4241904, 5302380, 7069840, 10604760, 21209520]

約数ペア:

[(1, 21209520), (2, 10604760), (3, 7069840), (4, 5302380), (5, 4241904), (6, 3534920), (8, 2651190), (10, 2120952), (12, 1767460), (15, 1413968), (16, 1325595), (20, 1060476), (24, 883730), (30, 706984), (40, 530238), (48, 441865), (60, 353492), (67, 316560), (80, 265119), (120, 176746), (134, 158280), (201, 105520), (240, 88373), (268, 79140), (335, 63312), (402, 52760), (536, 39570), (670, 31656), (804, 26380), (1005, 21104), (1072, 19785), (1319, 16080), (1340, 15828), (1608, 13190), (2010, 10552), (2638, 8040), (2680, 7914), (3216, 6595), (3957, 5360), (4020, 5276)]