9803920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:129

約数の個数: 120

約数和(自身を含む): 27607608

約数和(自身を除く): 17803688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 49, 56, 61, 70, 80, 82, 98, 112, 122, 140, 164, 196, 205, 244, 245, 280, 287, 305, 328, 392, 410, 427, 488, 490, 560, 574, 610, 656, 784, 820, 854, 976, 980, 1148, 1220, 1435, 1640, 1708, 1960, 2009, 2135, 2296, 2440, 2501, 2870, 2989, 3280, 3416, 3920, 4018, 4270, 4592, 4880, 5002, 5740, 5978, 6832, 8036, 8540, 10004, 10045, 11480, 11956, 12505, 14945, 16072, 17080, 17507, 20008, 20090, 22960, 23912, 25010, 29890, 32144, 34160, 35014, 40016, 40180, 47824, 50020, 59780, 70028, 80360, 87535, 100040, 119560, 122549, 140056, 160720, 175070, 200080, 239120, 245098, 280112, 350140, 490196, 612745, 700280, 980392, 1225490, 1400560, 1960784, 2450980, 4901960, 9803920]

約数ペア:

[(1, 9803920), (2, 4901960), (4, 2450980), (5, 1960784), (7, 1400560), (8, 1225490), (10, 980392), (14, 700280), (16, 612745), (20, 490196), (28, 350140), (35, 280112), (40, 245098), (41, 239120), (49, 200080), (56, 175070), (61, 160720), (70, 140056), (80, 122549), (82, 119560), (98, 100040), (112, 87535), (122, 80360), (140, 70028), (164, 59780), (196, 50020), (205, 47824), (244, 40180), (245, 40016), (280, 35014), (287, 34160), (305, 32144), (328, 29890), (392, 25010), (410, 23912), (427, 22960), (488, 20090), (490, 20008), (560, 17507), (574, 17080), (610, 16072), (656, 14945), (784, 12505), (820, 11956), (854, 11480), (976, 10045), (980, 10004), (1148, 8540), (1220, 8036), (1435, 6832), (1640, 5978), (1708, 5740), (1960, 5002), (2009, 4880), (2135, 4592), (2296, 4270), (2440, 4018), (2501, 3920), (2870, 3416), (2989, 3280)]