18738320

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3299}}^1$

素因数の和:3383

約数の個数: 40

約数和(自身を含む): 44193600

約数和(自身を除く): 25455280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3299, 5680, 6598, 13196, 16495, 26392, 32990, 52784, 65980, 131960, 234229, 263920, 468458, 936916, 1171145, 1873832, 2342290, 3747664, 4684580, 9369160, 18738320]

約数ペア:

[(1, 18738320), (2, 9369160), (4, 4684580), (5, 3747664), (8, 2342290), (10, 1873832), (16, 1171145), (20, 936916), (40, 468458), (71, 263920), (80, 234229), (142, 131960), (284, 65980), (355, 52784), (568, 32990), (710, 26392), (1136, 16495), (1420, 13196), (2840, 6598), (3299, 5680)]