18108220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 41263488

約数和(自身を除く): 23155268

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 257, 260, 271, 514, 542, 1028, 1084, 1285, 1355, 2570, 2710, 3341, 3523, 5140, 5420, 6682, 7046, 13364, 14092, 16705, 17615, 33410, 35230, 66820, 69647, 70460, 139294, 278588, 348235, 696470, 905411, 1392940, 1810822, 3621644, 4527055, 9054110, 18108220]

約数ペア:

[(1, 18108220), (2, 9054110), (4, 4527055), (5, 3621644), (10, 1810822), (13, 1392940), (20, 905411), (26, 696470), (52, 348235), (65, 278588), (130, 139294), (257, 70460), (260, 69647), (271, 66820), (514, 35230), (542, 33410), (1028, 17615), (1084, 16705), (1285, 14092), (1355, 13364), (2570, 7046), (2710, 6682), (3341, 5420), (3523, 5140)]