31904040

素因数分解:

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

素因数の和:2039

約数の個数: 128

約数和(自身を含む): 115200000

約数和(自身を除く): 83295960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1330, 1596, 1995, 1999, 2280, 2660, 3192, 3990, 3998, 5320, 5997, 7980, 7996, 9995, 11994, 13993, 15960, 15992, 19990, 23988, 27986, 29985, 37981, 39980, 41979, 47976, 55972, 59970, 69965, 75962, 79960, 83958, 111944, 113943, 119940, 139930, 151924, 167916, 189905, 209895, 227886, 239880, 265867, 279860, 303848, 335832, 379810, 419790, 455772, 531734, 559720, 569715, 759620, 797601, 839580, 911544, 1063468, 1139430, 1329335, 1519240, 1595202, 1679160, 2126936, 2278860, 2658670, 3190404, 3988005, 4557720, 5317340, 6380808, 7976010, 10634680, 15952020, 31904040]

約数ペア:

[(1, 31904040), (2, 15952020), (3, 10634680), (4, 7976010), (5, 6380808), (6, 5317340), (7, 4557720), (8, 3988005), (10, 3190404), (12, 2658670), (14, 2278860), (15, 2126936), (19, 1679160), (20, 1595202), (21, 1519240), (24, 1329335), (28, 1139430), (30, 1063468), (35, 911544), (38, 839580), (40, 797601), (42, 759620), (56, 569715), (57, 559720), (60, 531734), (70, 455772), (76, 419790), (84, 379810), (95, 335832), (105, 303848), (114, 279860), (120, 265867), (133, 239880), (140, 227886), (152, 209895), (168, 189905), (190, 167916), (210, 151924), (228, 139930), (266, 119940), (280, 113943), (285, 111944), (380, 83958), (399, 79960), (420, 75962), (456, 69965), (532, 59970), (570, 55972), (665, 47976), (760, 41979), (798, 39980), (840, 37981), (1064, 29985), (1140, 27986), (1330, 23988), (1596, 19990), (1995, 15992), (1999, 15960), (2280, 13993), (2660, 11994), (3192, 9995), (3990, 7996), (3998, 7980), (5320, 5997)]