19720408

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{3919}}^1$

素因数の和:3979

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 20498792

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 296, 629, 1258, 2516, 3919, 5032, 7838, 15676, 31352, 66623, 133246, 145003, 266492, 290006, 532984, 580012, 1160024, 2465051, 4930102, 9860204, 19720408]

約数ペア:

[(1, 19720408), (2, 9860204), (4, 4930102), (8, 2465051), (17, 1160024), (34, 580012), (37, 532984), (68, 290006), (74, 266492), (136, 145003), (148, 133246), (296, 66623), (629, 31352), (1258, 15676), (2516, 7838), (3919, 5032)]