208587520

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1831}}^1$

素因数の和:1941

約数の個数: 72

約数和(自身を含む): 505522080

約数和(自身を除く): 296934560

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, 1831, 2848, 3560, 3662, 5696, 7120, 7324, 9155, 11392, 14240, 14648, 18310, 22784, 28480, 29296, 36620, 56960, 58592, 73240, 113920, 117184, 146480, 162959, 234368, 292960, 325918, 468736, 585920, 651836, 814795, 1171840, 1303672, 1629590, 2343680, 2607344, 3259180, 5214688, 6518360, 10429376, 13036720, 20858752, 26073440, 41717504, 52146880, 104293760, 208587520]

約数ペア:

[(1, 208587520), (2, 104293760), (4, 52146880), (5, 41717504), (8, 26073440), (10, 20858752), (16, 13036720), (20, 10429376), (32, 6518360), (40, 5214688), (64, 3259180), (80, 2607344), (89, 2343680), (128, 1629590), (160, 1303672), (178, 1171840), (256, 814795), (320, 651836), (356, 585920), (445, 468736), (640, 325918), (712, 292960), (890, 234368), (1280, 162959), (1424, 146480), (1780, 117184), (1831, 113920), (2848, 73240), (3560, 58592), (3662, 56960), (5696, 36620), (7120, 29296), (7324, 28480), (9155, 22784), (11392, 18310), (14240, 14648)]