17991400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 48746880

約数和(自身を除く): 30755480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 70, 71, 100, 140, 142, 175, 181, 200, 280, 284, 350, 355, 362, 497, 568, 700, 710, 724, 905, 994, 1267, 1400, 1420, 1448, 1775, 1810, 1988, 2485, 2534, 2840, 3550, 3620, 3976, 4525, 4970, 5068, 6335, 7100, 7240, 9050, 9940, 10136, 12425, 12670, 12851, 14200, 18100, 19880, 24850, 25340, 25702, 31675, 36200, 49700, 50680, 51404, 63350, 64255, 89957, 99400, 102808, 126700, 128510, 179914, 253400, 257020, 321275, 359828, 449785, 514040, 642550, 719656, 899570, 1285100, 1799140, 2248925, 2570200, 3598280, 4497850, 8995700, 17991400]

約数ペア:

[(1, 17991400), (2, 8995700), (4, 4497850), (5, 3598280), (7, 2570200), (8, 2248925), (10, 1799140), (14, 1285100), (20, 899570), (25, 719656), (28, 642550), (35, 514040), (40, 449785), (50, 359828), (56, 321275), (70, 257020), (71, 253400), (100, 179914), (140, 128510), (142, 126700), (175, 102808), (181, 99400), (200, 89957), (280, 64255), (284, 63350), (350, 51404), (355, 50680), (362, 49700), (497, 36200), (568, 31675), (700, 25702), (710, 25340), (724, 24850), (905, 19880), (994, 18100), (1267, 14200), (1400, 12851), (1420, 12670), (1448, 12425), (1775, 10136), (1810, 9940), (1988, 9050), (2485, 7240), (2534, 7100), (2840, 6335), (3550, 5068), (3620, 4970), (3976, 4525)]