8440120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{16231}}^1$

素因数の和:16255

約数の個数: 32

約数和(自身を含む): 20452320

約数和(自身を除く): 12012200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 16231, 32462, 64924, 81155, 129848, 162310, 211003, 324620, 422006, 649240, 844012, 1055015, 1688024, 2110030, 4220060, 8440120]

約数ペア:

[(1, 8440120), (2, 4220060), (4, 2110030), (5, 1688024), (8, 1055015), (10, 844012), (13, 649240), (20, 422006), (26, 324620), (40, 211003), (52, 162310), (65, 129848), (104, 81155), (130, 64924), (260, 32462), (520, 16231)]