18480980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1307}}^1$

素因数の和:1424

約数の個数: 48

約数和(自身を含む): 44827776

約数和(自身を除く): 26346796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1307, 1414, 2020, 2614, 2828, 3535, 5228, 6535, 7070, 9149, 13070, 14140, 18298, 26140, 36596, 45745, 91490, 132007, 182980, 264014, 528028, 660035, 924049, 1320070, 1848098, 2640140, 3696196, 4620245, 9240490, 18480980]

約数ペア:

[(1, 18480980), (2, 9240490), (4, 4620245), (5, 3696196), (7, 2640140), (10, 1848098), (14, 1320070), (20, 924049), (28, 660035), (35, 528028), (70, 264014), (101, 182980), (140, 132007), (202, 91490), (404, 45745), (505, 36596), (707, 26140), (1010, 18298), (1307, 14140), (1414, 13070), (2020, 9149), (2614, 7070), (2828, 6535), (3535, 5228)]