81088790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{509}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 148716000

約数和(自身を除く): 67627210

約数列:

[1, 2, 5, 10, 89, 178, 179, 358, 445, 509, 890, 895, 1018, 1790, 2545, 5090, 15931, 31862, 45301, 79655, 90602, 91111, 159310, 182222, 226505, 453010, 455555, 911110, 8108879, 16217758, 40544395, 81088790]

約数ペア:

[(1, 81088790), (2, 40544395), (5, 16217758), (10, 8108879), (89, 911110), (178, 455555), (179, 453010), (358, 226505), (445, 182222), (509, 159310), (890, 91111), (895, 90602), (1018, 79655), (1790, 45301), (2545, 31862), (5090, 15931)]