156789381

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1\times {\mathrm{419}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 243210240

約数和(自身を除く): 86420859

約数列:

[1, 3, 7, 21, 103, 173, 309, 419, 519, 721, 1211, 1257, 2163, 2933, 3633, 8799, 17819, 43157, 53457, 72487, 124733, 129471, 217461, 302099, 374199, 507409, 906297, 1522227, 7466161, 22398483, 52263127, 156789381]

約数ペア:

[(1, 156789381), (3, 52263127), (7, 22398483), (21, 7466161), (103, 1522227), (173, 906297), (309, 507409), (419, 374199), (519, 302099), (721, 217461), (1211, 129471), (1257, 124733), (2163, 72487), (2933, 53457), (3633, 43157), (8799, 17819)]