25745920

素因数分解:

$2^9\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 80

約数和(自身を含む): 62975880

約数和(自身を除く): 37229960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 113, 128, 160, 178, 226, 256, 320, 356, 445, 452, 512, 565, 640, 712, 890, 904, 1130, 1280, 1424, 1780, 1808, 2260, 2560, 2848, 3560, 3616, 4520, 5696, 7120, 7232, 9040, 10057, 11392, 14240, 14464, 18080, 20114, 22784, 28480, 28928, 36160, 40228, 45568, 50285, 56960, 57856, 72320, 80456, 100570, 113920, 144640, 160912, 201140, 227840, 289280, 321824, 402280, 643648, 804560, 1287296, 1609120, 2574592, 3218240, 5149184, 6436480, 12872960, 25745920]

約数ペア:

[(1, 25745920), (2, 12872960), (4, 6436480), (5, 5149184), (8, 3218240), (10, 2574592), (16, 1609120), (20, 1287296), (32, 804560), (40, 643648), (64, 402280), (80, 321824), (89, 289280), (113, 227840), (128, 201140), (160, 160912), (178, 144640), (226, 113920), (256, 100570), (320, 80456), (356, 72320), (445, 57856), (452, 56960), (512, 50285), (565, 45568), (640, 40228), (712, 36160), (890, 28928), (904, 28480), (1130, 22784), (1280, 20114), (1424, 18080), (1780, 14464), (1808, 14240), (2260, 11392), (2560, 10057), (2848, 9040), (3560, 7232), (3616, 7120), (4520, 5696)]