20169688

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 27523112

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 137, 154, 239, 274, 308, 478, 548, 616, 956, 959, 1096, 1507, 1673, 1912, 1918, 2629, 3014, 3346, 3836, 5258, 6028, 6692, 7672, 10516, 10549, 12056, 13384, 18403, 21032, 21098, 32743, 36806, 42196, 65486, 73612, 84392, 130972, 147224, 229201, 261944, 360173, 458402, 720346, 916804, 1440692, 1833608, 2521211, 2881384, 5042422, 10084844, 20169688]

約数ペア:

[(1, 20169688), (2, 10084844), (4, 5042422), (7, 2881384), (8, 2521211), (11, 1833608), (14, 1440692), (22, 916804), (28, 720346), (44, 458402), (56, 360173), (77, 261944), (88, 229201), (137, 147224), (154, 130972), (239, 84392), (274, 73612), (308, 65486), (478, 42196), (548, 36806), (616, 32743), (956, 21098), (959, 21032), (1096, 18403), (1507, 13384), (1673, 12056), (1912, 10549), (1918, 10516), (2629, 7672), (3014, 6692), (3346, 6028), (3836, 5258)]