205169920

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1801}}^1$

素因数の和:1911

約数の個数: 72

約数和(自身を含む): 497243880

約数和(自身を除く): 292073960

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, 890, 1280, 1424, 1780, 1801, 2848, 3560, 3602, 5696, 7120, 7204, 9005, 11392, 14240, 14408, 18010, 22784, 28480, 28816, 36020, 56960, 57632, 72040, 113920, 115264, 144080, 160289, 230528, 288160, 320578, 461056, 576320, 641156, 801445, 1152640, 1282312, 1602890, 2305280, 2564624, 3205780, 5129248, 6411560, 10258496, 12823120, 20516992, 25646240, 41033984, 51292480, 102584960, 205169920]

約数ペア:

[(1, 205169920), (2, 102584960), (4, 51292480), (5, 41033984), (8, 25646240), (10, 20516992), (16, 12823120), (20, 10258496), (32, 6411560), (40, 5129248), (64, 3205780), (80, 2564624), (89, 2305280), (128, 1602890), (160, 1282312), (178, 1152640), (256, 801445), (320, 641156), (356, 576320), (445, 461056), (640, 320578), (712, 288160), (890, 230528), (1280, 160289), (1424, 144080), (1780, 115264), (1801, 113920), (2848, 72040), (3560, 57632), (3602, 56960), (5696, 36020), (7120, 28816), (7204, 28480), (9005, 22784), (11392, 18010), (14240, 14408)]