1999679360

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{2243}}^1$

素因数の和:2468

約数の個数: 128

約数和(自身を含む): 5493312000

約数和(自身を除く): 3493632640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 199, 224, 280, 320, 398, 448, 560, 640, 796, 896, 995, 1120, 1393, 1592, 1990, 2240, 2243, 2786, 3184, 3980, 4480, 4486, 5572, 6368, 6965, 7960, 8972, 11144, 11215, 12736, 13930, 15701, 15920, 17944, 22288, 22430, 25472, 27860, 31402, 31840, 35888, 44576, 44860, 55720, 62804, 63680, 71776, 78505, 89152, 89720, 111440, 125608, 127360, 143552, 157010, 178304, 179440, 222880, 251216, 287104, 314020, 358880, 445760, 446357, 502432, 628040, 717760, 891520, 892714, 1004864, 1256080, 1435520, 1785428, 2009728, 2231785, 2512160, 3124499, 3570856, 4463570, 5024320, 6248998, 7141712, 8927140, 10048640, 12497996, 14283424, 15622495, 17854280, 24995992, 28566848, 31244990, 35708560, 49991984, 57133696, 62489980, 71417120, 99983968, 124979960, 142834240, 199967936, 249959920, 285668480, 399935872, 499919840, 999839680, 1999679360]

約数ペア:

[(1, 1999679360), (2, 999839680), (4, 499919840), (5, 399935872), (7, 285668480), (8, 249959920), (10, 199967936), (14, 142834240), (16, 124979960), (20, 99983968), (28, 71417120), (32, 62489980), (35, 57133696), (40, 49991984), (56, 35708560), (64, 31244990), (70, 28566848), (80, 24995992), (112, 17854280), (128, 15622495), (140, 14283424), (160, 12497996), (199, 10048640), (224, 8927140), (280, 7141712), (320, 6248998), (398, 5024320), (448, 4463570), (560, 3570856), (640, 3124499), (796, 2512160), (896, 2231785), (995, 2009728), (1120, 1785428), (1393, 1435520), (1592, 1256080), (1990, 1004864), (2240, 892714), (2243, 891520), (2786, 717760), (3184, 628040), (3980, 502432), (4480, 446357), (4486, 445760), (5572, 358880), (6368, 314020), (6965, 287104), (7960, 251216), (8972, 222880), (11144, 179440), (11215, 178304), (12736, 157010), (13930, 143552), (15701, 127360), (15920, 125608), (17944, 111440), (22288, 89720), (22430, 89152), (25472, 78505), (27860, 71776), (31402, 63680), (31840, 62804), (35888, 55720), (44576, 44860)]