81513040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 160

約数和(自身を含む): 234270720

約数和(自身を除く): 152757680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 47, 56, 70, 76, 80, 94, 95, 112, 133, 140, 152, 163, 188, 190, 235, 266, 280, 304, 326, 329, 376, 380, 470, 532, 560, 652, 658, 665, 752, 760, 815, 893, 940, 1064, 1141, 1304, 1316, 1330, 1520, 1630, 1645, 1786, 1880, 2128, 2282, 2608, 2632, 2660, 3097, 3260, 3290, 3572, 3760, 4465, 4564, 5264, 5320, 5705, 6194, 6251, 6520, 6580, 7144, 7661, 8930, 9128, 10640, 11410, 12388, 12502, 13040, 13160, 14288, 15322, 15485, 17860, 18256, 21679, 22820, 24776, 25004, 26320, 30644, 30970, 31255, 35720, 38305, 43358, 45640, 49552, 50008, 53627, 61288, 61940, 62510, 71440, 76610, 86716, 91280, 100016, 107254, 108395, 122576, 123880, 125020, 145559, 153220, 173432, 214508, 216790, 247760, 250040, 268135, 291118, 306440, 346864, 429016, 433580, 500080, 536270, 582236, 612880, 727795, 858032, 867160, 1018913, 1072540, 1164472, 1455590, 1734320, 2037826, 2145080, 2328944, 2911180, 4075652, 4290160, 5094565, 5822360, 8151304, 10189130, 11644720, 16302608, 20378260, 40756520, 81513040]

約数ペア:

[(1, 81513040), (2, 40756520), (4, 20378260), (5, 16302608), (7, 11644720), (8, 10189130), (10, 8151304), (14, 5822360), (16, 5094565), (19, 4290160), (20, 4075652), (28, 2911180), (35, 2328944), (38, 2145080), (40, 2037826), (47, 1734320), (56, 1455590), (70, 1164472), (76, 1072540), (80, 1018913), (94, 867160), (95, 858032), (112, 727795), (133, 612880), (140, 582236), (152, 536270), (163, 500080), (188, 433580), (190, 429016), (235, 346864), (266, 306440), (280, 291118), (304, 268135), (326, 250040), (329, 247760), (376, 216790), (380, 214508), (470, 173432), (532, 153220), (560, 145559), (652, 125020), (658, 123880), (665, 122576), (752, 108395), (760, 107254), (815, 100016), (893, 91280), (940, 86716), (1064, 76610), (1141, 71440), (1304, 62510), (1316, 61940), (1330, 61288), (1520, 53627), (1630, 50008), (1645, 49552), (1786, 45640), (1880, 43358), (2128, 38305), (2282, 35720), (2608, 31255), (2632, 30970), (2660, 30644), (3097, 26320), (3260, 25004), (3290, 24776), (3572, 22820), (3760, 21679), (4465, 18256), (4564, 17860), (5264, 15485), (5320, 15322), (5705, 14288), (6194, 13160), (6251, 13040), (6520, 12502), (6580, 12388), (7144, 11410), (7661, 10640), (8930, 9128)]