149740720

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21031}}^1$

素因数の和:21133

約数の個数: 40

約数和(自身を含む): 352075680

約数和(自身を除く): 202334960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 21031, 42062, 84124, 105155, 168248, 210310, 336496, 420620, 841240, 1682480, 1871759, 3743518, 7487036, 9358795, 14974072, 18717590, 29948144, 37435180, 74870360, 149740720]

約数ペア:

[(1, 149740720), (2, 74870360), (4, 37435180), (5, 29948144), (8, 18717590), (10, 14974072), (16, 9358795), (20, 7487036), (40, 3743518), (80, 1871759), (89, 1682480), (178, 841240), (356, 420620), (445, 336496), (712, 210310), (890, 168248), (1424, 105155), (1780, 84124), (3560, 42062), (7120, 21031)]