28357180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^2\times {\mathrm{179}}^1$

素因数の和:366

約数の個数: 36

約数和(自身を含む): 60563160

約数和(自身を除く): 32205980

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 179, 356, 358, 445, 716, 890, 895, 1780, 1790, 3580, 7921, 15842, 15931, 31684, 31862, 39605, 63724, 79210, 79655, 158420, 159310, 318620, 1417859, 2835718, 5671436, 7089295, 14178590, 28357180]

約数ペア:

[(1, 28357180), (2, 14178590), (4, 7089295), (5, 5671436), (10, 2835718), (20, 1417859), (89, 318620), (178, 159310), (179, 158420), (356, 79655), (358, 79210), (445, 63724), (716, 39605), (890, 31862), (895, 31684), (1780, 15931), (1790, 15842), (3580, 7921)]