99907840

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{877}}^1$

素因数の和:987

約数の個数: 72

約数和(自身を含む): 242275320

約数和(自身を除く): 142367480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 256, 320, 356, 445, 640, 712, 877, 890, 1280, 1424, 1754, 1780, 2848, 3508, 3560, 4385, 5696, 7016, 7120, 8770, 11392, 14032, 14240, 17540, 22784, 28064, 28480, 35080, 56128, 56960, 70160, 78053, 112256, 113920, 140320, 156106, 224512, 280640, 312212, 390265, 561280, 624424, 780530, 1122560, 1248848, 1561060, 2497696, 3122120, 4995392, 6244240, 9990784, 12488480, 19981568, 24976960, 49953920, 99907840]

約数ペア:

[(1, 99907840), (2, 49953920), (4, 24976960), (5, 19981568), (8, 12488480), (10, 9990784), (16, 6244240), (20, 4995392), (32, 3122120), (40, 2497696), (64, 1561060), (80, 1248848), (89, 1122560), (128, 780530), (160, 624424), (178, 561280), (256, 390265), (320, 312212), (356, 280640), (445, 224512), (640, 156106), (712, 140320), (877, 113920), (890, 112256), (1280, 78053), (1424, 70160), (1754, 56960), (1780, 56128), (2848, 35080), (3508, 28480), (3560, 28064), (4385, 22784), (5696, 17540), (7016, 14240), (7120, 14032), (8770, 11392)]