21221665535

素因数分解:

$5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{651271}}^1$

素因数の和:651316

約数の個数: 32

約数和(自身を含む): 31261056000

約数和(自身を除く): 10039390465

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 343, 665, 931, 1715, 4655, 6517, 32585, 651271, 3256355, 4558897, 12374149, 22794485, 31912279, 61870745, 86619043, 159561395, 223385953, 433095215, 606333301, 1116929765, 3031666505, 4244333107, 21221665535]

約数ペア:

[(1, 21221665535), (5, 4244333107), (7, 3031666505), (19, 1116929765), (35, 606333301), (49, 433095215), (95, 223385953), (133, 159561395), (245, 86619043), (343, 61870745), (665, 31912279), (931, 22794485), (1715, 12374149), (4655, 4558897), (6517, 3256355), (32585, 651271)]