20719440

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4111}}^1$

素因数の和:4137

約数の個数: 120

約数和(自身を含む): 79542528

約数和(自身を除く): 58823088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4111, 5040, 8222, 12333, 16444, 20555, 24666, 28777, 32888, 36999, 41110, 49332, 57554, 61665, 65776, 73998, 82220, 86331, 98664, 115108, 123330, 143885, 147996, 164440, 172662, 184995, 197328, 230216, 246660, 258993, 287770, 295992, 328880, 345324, 369990, 431655, 460432, 493320, 517986, 575540, 591984, 690648, 739980, 863310, 986640, 1035972, 1151080, 1294965, 1381296, 1479960, 1726620, 2071944, 2302160, 2589930, 2959920, 3453240, 4143888, 5179860, 6906480, 10359720, 20719440]

約数ペア:

[(1, 20719440), (2, 10359720), (3, 6906480), (4, 5179860), (5, 4143888), (6, 3453240), (7, 2959920), (8, 2589930), (9, 2302160), (10, 2071944), (12, 1726620), (14, 1479960), (15, 1381296), (16, 1294965), (18, 1151080), (20, 1035972), (21, 986640), (24, 863310), (28, 739980), (30, 690648), (35, 591984), (36, 575540), (40, 517986), (42, 493320), (45, 460432), (48, 431655), (56, 369990), (60, 345324), (63, 328880), (70, 295992), (72, 287770), (80, 258993), (84, 246660), (90, 230216), (105, 197328), (112, 184995), (120, 172662), (126, 164440), (140, 147996), (144, 143885), (168, 123330), (180, 115108), (210, 98664), (240, 86331), (252, 82220), (280, 73998), (315, 65776), (336, 61665), (360, 57554), (420, 49332), (504, 41110), (560, 36999), (630, 32888), (720, 28777), (840, 24666), (1008, 20555), (1260, 16444), (1680, 12333), (2520, 8222), (4111, 5040)]