129800020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6971}}^1$

素因数の和:7013

約数の個数: 72

約数和(自身を含む): 333819360

約数和(自身を除く): 204019340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4655, 6971, 9310, 13942, 18620, 27884, 34855, 48797, 69710, 97594, 132449, 139420, 195188, 243985, 264898, 341579, 487970, 529796, 662245, 683158, 927143, 975940, 1324490, 1366316, 1707895, 1854286, 2648980, 3415790, 3708572, 4635715, 6490001, 6831580, 9271430, 12980002, 18542860, 25960004, 32450005, 64900010, 129800020]

約数ペア:

[(1, 129800020), (2, 64900010), (4, 32450005), (5, 25960004), (7, 18542860), (10, 12980002), (14, 9271430), (19, 6831580), (20, 6490001), (28, 4635715), (35, 3708572), (38, 3415790), (49, 2648980), (70, 1854286), (76, 1707895), (95, 1366316), (98, 1324490), (133, 975940), (140, 927143), (190, 683158), (196, 662245), (245, 529796), (266, 487970), (380, 341579), (490, 264898), (532, 243985), (665, 195188), (931, 139420), (980, 132449), (1330, 97594), (1862, 69710), (2660, 48797), (3724, 34855), (4655, 27884), (6971, 18620), (9310, 13942)]