66291212420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{643729}}^1$

素因数の和:644028

約数の個数: 48

約数和(自身を含む): 147079430400

約数和(自身を除く): 80788217980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 271, 380, 542, 1084, 1355, 2710, 5149, 5420, 10298, 20596, 25745, 51490, 102980, 643729, 1287458, 2574916, 3218645, 6437290, 12230851, 12874580, 24461702, 48923404, 61154255, 122308510, 174450559, 244617020, 348901118, 697802236, 872252795, 1744505590, 3314560621, 3489011180, 6629121242, 13258242484, 16572803105, 33145606210, 66291212420]

約数ペア:

[(1, 66291212420), (2, 33145606210), (4, 16572803105), (5, 13258242484), (10, 6629121242), (19, 3489011180), (20, 3314560621), (38, 1744505590), (76, 872252795), (95, 697802236), (190, 348901118), (271, 244617020), (380, 174450559), (542, 122308510), (1084, 61154255), (1355, 48923404), (2710, 24461702), (5149, 12874580), (5420, 12230851), (10298, 6437290), (20596, 3218645), (25745, 2574916), (51490, 1287458), (102980, 643729)]