80541440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 225167040

約数和(自身を除く): 144625600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 89, 101, 112, 128, 140, 160, 178, 202, 224, 256, 280, 320, 356, 404, 445, 448, 505, 560, 623, 640, 707, 712, 808, 890, 896, 1010, 1120, 1246, 1280, 1414, 1424, 1616, 1780, 1792, 2020, 2240, 2492, 2828, 2848, 3115, 3232, 3535, 3560, 4040, 4480, 4984, 5656, 5696, 6230, 6464, 7070, 7120, 8080, 8960, 8989, 9968, 11312, 11392, 12460, 12928, 14140, 14240, 16160, 17978, 19936, 22624, 22784, 24920, 25856, 28280, 28480, 32320, 35956, 39872, 44945, 45248, 49840, 56560, 56960, 62923, 64640, 71912, 79744, 89890, 90496, 99680, 113120, 113920, 125846, 129280, 143824, 159488, 179780, 180992, 199360, 226240, 251692, 287648, 314615, 359560, 398720, 452480, 503384, 575296, 629230, 719120, 797440, 904960, 1006768, 1150592, 1258460, 1438240, 2013536, 2301184, 2516920, 2876480, 4027072, 5033840, 5752960, 8054144, 10067680, 11505920, 16108288, 20135360, 40270720, 80541440]

約数ペア:

[(1, 80541440), (2, 40270720), (4, 20135360), (5, 16108288), (7, 11505920), (8, 10067680), (10, 8054144), (14, 5752960), (16, 5033840), (20, 4027072), (28, 2876480), (32, 2516920), (35, 2301184), (40, 2013536), (56, 1438240), (64, 1258460), (70, 1150592), (80, 1006768), (89, 904960), (101, 797440), (112, 719120), (128, 629230), (140, 575296), (160, 503384), (178, 452480), (202, 398720), (224, 359560), (256, 314615), (280, 287648), (320, 251692), (356, 226240), (404, 199360), (445, 180992), (448, 179780), (505, 159488), (560, 143824), (623, 129280), (640, 125846), (707, 113920), (712, 113120), (808, 99680), (890, 90496), (896, 89890), (1010, 79744), (1120, 71912), (1246, 64640), (1280, 62923), (1414, 56960), (1424, 56560), (1616, 49840), (1780, 45248), (1792, 44945), (2020, 39872), (2240, 35956), (2492, 32320), (2828, 28480), (2848, 28280), (3115, 25856), (3232, 24920), (3535, 22784), (3560, 22624), (4040, 19936), (4480, 17978), (4984, 16160), (5656, 14240), (5696, 14140), (6230, 12928), (6464, 12460), (7070, 11392), (7120, 11312), (8080, 9968), (8960, 8989)]