21001950

素因数分解:

$2^1\times 3^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 59281920

約数和(自身を除く): 38279970

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 47, 50, 54, 75, 90, 94, 135, 141, 150, 225, 235, 270, 282, 331, 423, 450, 470, 662, 675, 705, 846, 993, 1175, 1269, 1350, 1410, 1655, 1986, 2115, 2350, 2538, 2979, 3310, 3525, 4230, 4965, 5958, 6345, 7050, 8275, 8937, 9930, 10575, 12690, 14895, 15557, 16550, 17874, 21150, 24825, 29790, 31114, 31725, 44685, 46671, 49650, 63450, 74475, 77785, 89370, 93342, 140013, 148950, 155570, 223425, 233355, 280026, 388925, 420039, 446850, 466710, 700065, 777850, 840078, 1166775, 1400130, 2100195, 2333550, 3500325, 4200390, 7000650, 10500975, 21001950]

約数ペア:

[(1, 21001950), (2, 10500975), (3, 7000650), (5, 4200390), (6, 3500325), (9, 2333550), (10, 2100195), (15, 1400130), (18, 1166775), (25, 840078), (27, 777850), (30, 700065), (45, 466710), (47, 446850), (50, 420039), (54, 388925), (75, 280026), (90, 233355), (94, 223425), (135, 155570), (141, 148950), (150, 140013), (225, 93342), (235, 89370), (270, 77785), (282, 74475), (331, 63450), (423, 49650), (450, 46671), (470, 44685), (662, 31725), (675, 31114), (705, 29790), (846, 24825), (993, 21150), (1175, 17874), (1269, 16550), (1350, 15557), (1410, 14895), (1655, 12690), (1986, 10575), (2115, 9930), (2350, 8937), (2538, 8275), (2979, 7050), (3310, 6345), (3525, 5958), (4230, 4965)]