18922670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 20752210

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 47, 65, 94, 95, 130, 163, 190, 235, 247, 326, 470, 494, 611, 815, 893, 1222, 1235, 1630, 1786, 2119, 2470, 3055, 3097, 4238, 4465, 6110, 6194, 7661, 8930, 10595, 11609, 15322, 15485, 21190, 23218, 30970, 38305, 40261, 58045, 76610, 80522, 99593, 116090, 145559, 199186, 201305, 291118, 402610, 497965, 727795, 995930, 1455590, 1892267, 3784534, 9461335, 18922670]

約数ペア:

[(1, 18922670), (2, 9461335), (5, 3784534), (10, 1892267), (13, 1455590), (19, 995930), (26, 727795), (38, 497965), (47, 402610), (65, 291118), (94, 201305), (95, 199186), (130, 145559), (163, 116090), (190, 99593), (235, 80522), (247, 76610), (326, 58045), (470, 40261), (494, 38305), (611, 30970), (815, 23218), (893, 21190), (1222, 15485), (1235, 15322), (1630, 11609), (1786, 10595), (2119, 8930), (2470, 7661), (3055, 6194), (3097, 6110), (4238, 4465)]