20324720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19543}}^1$

素因数の和:19569

約数の個数: 40

約数和(自身を含む): 50892576

約数和(自身を除く): 30567856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19543, 39086, 78172, 97715, 156344, 195430, 254059, 312688, 390860, 508118, 781720, 1016236, 1270295, 1563440, 2032472, 2540590, 4064944, 5081180, 10162360, 20324720]

約数ペア:

[(1, 20324720), (2, 10162360), (4, 5081180), (5, 4064944), (8, 2540590), (10, 2032472), (13, 1563440), (16, 1270295), (20, 1016236), (26, 781720), (40, 508118), (52, 390860), (65, 312688), (80, 254059), (104, 195430), (130, 156344), (208, 97715), (260, 78172), (520, 39086), (1040, 19543)]