1538117960

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1\times {\mathrm{641}}^1$

素因数の和:1142

約数の個数: 64

約数和(自身を含む): 3494534400

約数和(自身を除く): 1956416440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 251, 478, 502, 641, 956, 1004, 1195, 1255, 1282, 1912, 2008, 2390, 2510, 2564, 3205, 4780, 5020, 5128, 6410, 9560, 10040, 12820, 25640, 59989, 119978, 153199, 160891, 239956, 299945, 306398, 321782, 479912, 599890, 612796, 643564, 765995, 804455, 1199780, 1225592, 1287128, 1531990, 1608910, 2399560, 3063980, 3217820, 6127960, 6435640, 38452949, 76905898, 153811796, 192264745, 307623592, 384529490, 769058980, 1538117960]

約数ペア:

[(1, 1538117960), (2, 769058980), (4, 384529490), (5, 307623592), (8, 192264745), (10, 153811796), (20, 76905898), (40, 38452949), (239, 6435640), (251, 6127960), (478, 3217820), (502, 3063980), (641, 2399560), (956, 1608910), (1004, 1531990), (1195, 1287128), (1255, 1225592), (1282, 1199780), (1912, 804455), (2008, 765995), (2390, 643564), (2510, 612796), (2564, 599890), (3205, 479912), (4780, 321782), (5020, 306398), (5128, 299945), (6410, 239956), (9560, 160891), (10040, 153199), (12820, 119978), (25640, 59989)]