2450980

素因数分解:

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

素因数の和:125

約数の個数: 72

約数和(自身を含む): 6233976

約数和(自身を除く): 3782996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 61, 70, 82, 98, 122, 140, 164, 196, 205, 244, 245, 287, 305, 410, 427, 490, 574, 610, 820, 854, 980, 1148, 1220, 1435, 1708, 2009, 2135, 2501, 2870, 2989, 4018, 4270, 5002, 5740, 5978, 8036, 8540, 10004, 10045, 11956, 12505, 14945, 17507, 20090, 25010, 29890, 35014, 40180, 50020, 59780, 70028, 87535, 122549, 175070, 245098, 350140, 490196, 612745, 1225490, 2450980]

約数ペア:

[(1, 2450980), (2, 1225490), (4, 612745), (5, 490196), (7, 350140), (10, 245098), (14, 175070), (20, 122549), (28, 87535), (35, 70028), (41, 59780), (49, 50020), (61, 40180), (70, 35014), (82, 29890), (98, 25010), (122, 20090), (140, 17507), (164, 14945), (196, 12505), (205, 11956), (244, 10045), (245, 10004), (287, 8540), (305, 8036), (410, 5978), (427, 5740), (490, 5002), (574, 4270), (610, 4018), (820, 2989), (854, 2870), (980, 2501), (1148, 2135), (1220, 2009), (1435, 1708)]