308405720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2065

約数の個数: 128

約数和(自身を含む): 864000000

約数和(自身を除く): 555594280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 29, 35, 38, 40, 56, 58, 70, 76, 95, 116, 133, 140, 145, 152, 190, 203, 232, 266, 280, 290, 380, 406, 532, 551, 580, 665, 760, 812, 1015, 1064, 1102, 1160, 1330, 1624, 1999, 2030, 2204, 2660, 2755, 3857, 3998, 4060, 4408, 5320, 5510, 7714, 7996, 8120, 9995, 11020, 13993, 15428, 15992, 19285, 19990, 22040, 27986, 30856, 37981, 38570, 39980, 55972, 57971, 69965, 75962, 77140, 79960, 111944, 115942, 139930, 151924, 154280, 189905, 231884, 265867, 279860, 289855, 303848, 379810, 405797, 463768, 531734, 559720, 579710, 759620, 811594, 1063468, 1101449, 1159420, 1329335, 1519240, 1623188, 2028985, 2126936, 2202898, 2318840, 2658670, 3246376, 4057970, 4405796, 5317340, 5507245, 7710143, 8115940, 8811592, 10634680, 11014490, 15420286, 16231880, 22028980, 30840572, 38550715, 44057960, 61681144, 77101430, 154202860, 308405720]

約数ペア:

[(1, 308405720), (2, 154202860), (4, 77101430), (5, 61681144), (7, 44057960), (8, 38550715), (10, 30840572), (14, 22028980), (19, 16231880), (20, 15420286), (28, 11014490), (29, 10634680), (35, 8811592), (38, 8115940), (40, 7710143), (56, 5507245), (58, 5317340), (70, 4405796), (76, 4057970), (95, 3246376), (116, 2658670), (133, 2318840), (140, 2202898), (145, 2126936), (152, 2028985), (190, 1623188), (203, 1519240), (232, 1329335), (266, 1159420), (280, 1101449), (290, 1063468), (380, 811594), (406, 759620), (532, 579710), (551, 559720), (580, 531734), (665, 463768), (760, 405797), (812, 379810), (1015, 303848), (1064, 289855), (1102, 279860), (1160, 265867), (1330, 231884), (1624, 189905), (1999, 154280), (2030, 151924), (2204, 139930), (2660, 115942), (2755, 111944), (3857, 79960), (3998, 77140), (4060, 75962), (4408, 69965), (5320, 57971), (5510, 55972), (7714, 39980), (7996, 38570), (8120, 37981), (9995, 30856), (11020, 27986), (13993, 22040), (15428, 19990), (15992, 19285)]