21471750440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{499}}^1\times {\mathrm{643}}^1$

素因数の和:1399

約数の個数: 128

約数和(自身を含む): 55641600000

約数和(自身を除く): 34169849560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 499, 643, 956, 998, 1195, 1286, 1673, 1912, 1996, 2390, 2495, 2572, 3215, 3346, 3493, 3992, 4501, 4780, 4990, 5144, 6430, 6692, 6986, 8365, 9002, 9560, 9980, 12860, 13384, 13972, 16730, 17465, 18004, 19960, 22505, 25720, 27944, 33460, 34930, 36008, 45010, 66920, 69860, 90020, 119261, 139720, 153677, 180040, 238522, 307354, 320857, 477044, 596305, 614708, 641714, 768385, 834827, 954088, 1075739, 1192610, 1229416, 1283428, 1536770, 1604285, 1669654, 2151478, 2245999, 2385220, 2566856, 3073540, 3208570, 3339308, 4174135, 4302956, 4491998, 4770440, 5378695, 6147080, 6417140, 6678616, 8348270, 8605912, 8983996, 10757390, 11229995, 12834280, 16696540, 17967992, 21514780, 22459990, 33393080, 43029560, 44919980, 76684823, 89839960, 153369646, 306739292, 383424115, 536793761, 613478584, 766848230, 1073587522, 1533696460, 2147175044, 2683968805, 3067392920, 4294350088, 5367937610, 10735875220, 21471750440]

約数ペア:

[(1, 21471750440), (2, 10735875220), (4, 5367937610), (5, 4294350088), (7, 3067392920), (8, 2683968805), (10, 2147175044), (14, 1533696460), (20, 1073587522), (28, 766848230), (35, 613478584), (40, 536793761), (56, 383424115), (70, 306739292), (140, 153369646), (239, 89839960), (280, 76684823), (478, 44919980), (499, 43029560), (643, 33393080), (956, 22459990), (998, 21514780), (1195, 17967992), (1286, 16696540), (1673, 12834280), (1912, 11229995), (1996, 10757390), (2390, 8983996), (2495, 8605912), (2572, 8348270), (3215, 6678616), (3346, 6417140), (3493, 6147080), (3992, 5378695), (4501, 4770440), (4780, 4491998), (4990, 4302956), (5144, 4174135), (6430, 3339308), (6692, 3208570), (6986, 3073540), (8365, 2566856), (9002, 2385220), (9560, 2245999), (9980, 2151478), (12860, 1669654), (13384, 1604285), (13972, 1536770), (16730, 1283428), (17465, 1229416), (18004, 1192610), (19960, 1075739), (22505, 954088), (25720, 834827), (27944, 768385), (33460, 641714), (34930, 614708), (36008, 596305), (45010, 477044), (66920, 320857), (69860, 307354), (90020, 238522), (119261, 180040), (139720, 153677)]