20531145

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 34467840

約数和(自身を除く): 13936695

約数列:

[1, 3, 5, 15, 31, 67, 93, 155, 201, 335, 465, 659, 1005, 1977, 2077, 3295, 6231, 9885, 10385, 20429, 31155, 44153, 61287, 102145, 132459, 220765, 306435, 662295, 1368743, 4106229, 6843715, 20531145]

約数ペア:

[(1, 20531145), (3, 6843715), (5, 4106229), (15, 1368743), (31, 662295), (67, 306435), (93, 220765), (155, 132459), (201, 102145), (335, 61287), (465, 44153), (659, 31155), (1005, 20429), (1977, 10385), (2077, 9885), (3295, 6231)]