20392455

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 33606144

約数和(自身を除く): 13213689

約数列:

[1, 3, 5, 15, 67, 103, 197, 201, 309, 335, 515, 591, 985, 1005, 1545, 2955, 6901, 13199, 20291, 20703, 34505, 39597, 60873, 65995, 101455, 103515, 197985, 304365, 1359497, 4078491, 6797485, 20392455]

約数ペア:

[(1, 20392455), (3, 6797485), (5, 4078491), (15, 1359497), (67, 304365), (103, 197985), (197, 103515), (201, 101455), (309, 65995), (335, 60873), (515, 39597), (591, 34505), (985, 20703), (1005, 20291), (1545, 13199), (2955, 6901)]