16921380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{40289}}^1$

素因数の和:40308

約数の個数: 48

約数和(自身を含む): 54149760

約数和(自身を除く): 37228380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 40289, 80578, 120867, 161156, 201445, 241734, 282023, 402890, 483468, 564046, 604335, 805780, 846069, 1128092, 1208670, 1410115, 1692138, 2417340, 2820230, 3384276, 4230345, 5640460, 8460690, 16921380]

約数ペア:

[(1, 16921380), (2, 8460690), (3, 5640460), (4, 4230345), (5, 3384276), (6, 2820230), (7, 2417340), (10, 1692138), (12, 1410115), (14, 1208670), (15, 1128092), (20, 846069), (21, 805780), (28, 604335), (30, 564046), (35, 483468), (42, 402890), (60, 282023), (70, 241734), (84, 201445), (105, 161156), (140, 120867), (210, 80578), (420, 40289)]