20640480

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6143}}^1$

素因数の和:6168

約数の個数: 96

約数和(自身を含む): 74317824

約数和(自身を除く): 53677344

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6143, 12286, 18429, 24572, 30715, 36858, 43001, 49144, 61430, 73716, 86002, 92145, 98288, 122860, 129003, 147432, 172004, 184290, 196576, 215005, 245720, 258006, 294864, 344008, 368580, 430010, 491440, 516012, 589728, 645015, 688016, 737160, 860020, 982880, 1032024, 1290030, 1376032, 1474320, 1720040, 2064048, 2580060, 2948640, 3440080, 4128096, 5160120, 6880160, 10320240, 20640480]

約数ペア:

[(1, 20640480), (2, 10320240), (3, 6880160), (4, 5160120), (5, 4128096), (6, 3440080), (7, 2948640), (8, 2580060), (10, 2064048), (12, 1720040), (14, 1474320), (15, 1376032), (16, 1290030), (20, 1032024), (21, 982880), (24, 860020), (28, 737160), (30, 688016), (32, 645015), (35, 589728), (40, 516012), (42, 491440), (48, 430010), (56, 368580), (60, 344008), (70, 294864), (80, 258006), (84, 245720), (96, 215005), (105, 196576), (112, 184290), (120, 172004), (140, 147432), (160, 129003), (168, 122860), (210, 98288), (224, 92145), (240, 86002), (280, 73716), (336, 61430), (420, 49144), (480, 43001), (560, 36858), (672, 30715), (840, 24572), (1120, 18429), (1680, 12286), (3360, 6143)]