20961844280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40311239}}^1$

素因数の和:40311263

約数の個数: 32

約数和(自身を含む): 50792162400

約数和(自身を除く): 29830318120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40311239, 80622478, 161244956, 201556195, 322489912, 403112390, 524046107, 806224780, 1048092214, 1612449560, 2096184428, 2620230535, 4192368856, 5240461070, 10480922140, 20961844280]

約数ペア:

[(1, 20961844280), (2, 10480922140), (4, 5240461070), (5, 4192368856), (8, 2620230535), (10, 2096184428), (13, 1612449560), (20, 1048092214), (26, 806224780), (40, 524046107), (52, 403112390), (65, 322489912), (104, 201556195), (130, 161244956), (260, 80622478), (520, 40311239)]