30719240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8629}}^1$

素因数の和:8729

約数の個数: 32

約数和(自身を含む): 69903000

約数和(自身を除く): 39183760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8629, 17258, 34516, 43145, 69032, 86290, 172580, 345160, 767981, 1535962, 3071924, 3839905, 6143848, 7679810, 15359620, 30719240]

約数ペア:

[(1, 30719240), (2, 15359620), (4, 7679810), (5, 6143848), (8, 3839905), (10, 3071924), (20, 1535962), (40, 767981), (89, 345160), (178, 172580), (356, 86290), (445, 69032), (712, 43145), (890, 34516), (1780, 17258), (3560, 8629)]