78423740

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{3989}}^1$

素因数の和:4981

約数の個数: 24

約数和(自身を含む): 164898720

約数和(自身を除く): 86474980

約数列:

[1, 2, 4, 5, 10, 20, 983, 1966, 3932, 3989, 4915, 7978, 9830, 15956, 19660, 19945, 39890, 79780, 3921187, 7842374, 15684748, 19605935, 39211870, 78423740]

約数ペア:

[(1, 78423740), (2, 39211870), (4, 19605935), (5, 15684748), (10, 7842374), (20, 3921187), (983, 79780), (1966, 39890), (3932, 19945), (3989, 19660), (4915, 15956), (7978, 9830)]