21809970

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2663}}^1$

素因数の和:2696

約数の個数: 96

約数和(自身を含む): 69818112

約数和(自身を除く): 48008142

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 63, 65, 70, 78, 90, 91, 105, 117, 126, 130, 182, 195, 210, 234, 273, 315, 390, 455, 546, 585, 630, 819, 910, 1170, 1365, 1638, 2663, 2730, 4095, 5326, 7989, 8190, 13315, 15978, 18641, 23967, 26630, 34619, 37282, 39945, 47934, 55923, 69238, 79890, 93205, 103857, 111846, 119835, 167769, 173095, 186410, 207714, 239670, 242333, 279615, 311571, 335538, 346190, 484666, 519285, 559230, 623142, 726999, 838845, 1038570, 1211665, 1453998, 1557855, 1677690, 2180997, 2423330, 3115710, 3634995, 4361994, 7269990, 10904985, 21809970]

約数ペア:

[(1, 21809970), (2, 10904985), (3, 7269990), (5, 4361994), (6, 3634995), (7, 3115710), (9, 2423330), (10, 2180997), (13, 1677690), (14, 1557855), (15, 1453998), (18, 1211665), (21, 1038570), (26, 838845), (30, 726999), (35, 623142), (39, 559230), (42, 519285), (45, 484666), (63, 346190), (65, 335538), (70, 311571), (78, 279615), (90, 242333), (91, 239670), (105, 207714), (117, 186410), (126, 173095), (130, 167769), (182, 119835), (195, 111846), (210, 103857), (234, 93205), (273, 79890), (315, 69238), (390, 55923), (455, 47934), (546, 39945), (585, 37282), (630, 34619), (819, 26630), (910, 23967), (1170, 18641), (1365, 15978), (1638, 13315), (2663, 8190), (2730, 7989), (4095, 5326)]