129640960

素因数分解:

$2^9\times 5^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:681

約数の個数: 80

約数和(自身を含む): 314879400

約数和(自身を除く): 185238440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 320, 356, 445, 512, 569, 640, 712, 890, 1138, 1280, 1424, 1780, 2276, 2560, 2845, 2848, 3560, 4552, 5690, 5696, 7120, 9104, 11380, 11392, 14240, 18208, 22760, 22784, 28480, 36416, 45520, 45568, 50641, 56960, 72832, 91040, 101282, 113920, 145664, 182080, 202564, 227840, 253205, 291328, 364160, 405128, 506410, 728320, 810256, 1012820, 1456640, 1620512, 2025640, 3241024, 4051280, 6482048, 8102560, 12964096, 16205120, 25928192, 32410240, 64820480, 129640960]

約数ペア:

[(1, 129640960), (2, 64820480), (4, 32410240), (5, 25928192), (8, 16205120), (10, 12964096), (16, 8102560), (20, 6482048), (32, 4051280), (40, 3241024), (64, 2025640), (80, 1620512), (89, 1456640), (128, 1012820), (160, 810256), (178, 728320), (256, 506410), (320, 405128), (356, 364160), (445, 291328), (512, 253205), (569, 227840), (640, 202564), (712, 182080), (890, 145664), (1138, 113920), (1280, 101282), (1424, 91040), (1780, 72832), (2276, 56960), (2560, 50641), (2845, 45568), (2848, 45520), (3560, 36416), (4552, 28480), (5690, 22784), (5696, 22760), (7120, 18208), (9104, 14240), (11380, 11392)]