20640650

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{21727}}^1$

素因数の和:21758

約数の個数: 24

約数和(自身を含む): 40414080

約数和(自身を除く): 19773430

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 475, 950, 21727, 43454, 108635, 217270, 412813, 543175, 825626, 1086350, 2064065, 4128130, 10320325, 20640650]

約数ペア:

[(1, 20640650), (2, 10320325), (5, 4128130), (10, 2064065), (19, 1086350), (25, 825626), (38, 543175), (50, 412813), (95, 217270), (190, 108635), (475, 43454), (950, 21727)]