289136080

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{40609}}^1$

素因数の和:40711

約数の個数: 40

約数和(自身を含む): 679811400

約数和(自身を除く): 390675320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 40609, 81218, 162436, 203045, 324872, 406090, 649744, 812180, 1624360, 3248720, 3614201, 7228402, 14456804, 18071005, 28913608, 36142010, 57827216, 72284020, 144568040, 289136080]

約数ペア:

[(1, 289136080), (2, 144568040), (4, 72284020), (5, 57827216), (8, 36142010), (10, 28913608), (16, 18071005), (20, 14456804), (40, 7228402), (80, 3614201), (89, 3248720), (178, 1624360), (356, 812180), (445, 649744), (712, 406090), (890, 324872), (1424, 203045), (1780, 162436), (3560, 81218), (7120, 40609)]