20920120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40231}}^1$

素因数の和:40255

約数の個数: 32

約数和(自身を含む): 50692320

約数和(自身を除く): 29772200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40231, 80462, 160924, 201155, 321848, 402310, 523003, 804620, 1046006, 1609240, 2092012, 2615015, 4184024, 5230030, 10460060, 20920120]

約数ペア:

[(1, 20920120), (2, 10460060), (4, 5230030), (5, 4184024), (8, 2615015), (10, 2092012), (13, 1609240), (20, 1046006), (26, 804620), (40, 523003), (52, 402310), (65, 321848), (104, 201155), (130, 160924), (260, 80462), (520, 40231)]