19982080

素因数分解:

$2^8\times 5^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 48786192

約数和(自身を除く): 28804112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 233, 256, 268, 320, 335, 466, 536, 640, 670, 932, 1072, 1165, 1280, 1340, 1864, 2144, 2330, 2680, 3728, 4288, 4660, 5360, 7456, 8576, 9320, 10720, 14912, 15611, 17152, 18640, 21440, 29824, 31222, 37280, 42880, 59648, 62444, 74560, 78055, 85760, 124888, 149120, 156110, 249776, 298240, 312220, 499552, 624440, 999104, 1248880, 1998208, 2497760, 3996416, 4995520, 9991040, 19982080]

約数ペア:

[(1, 19982080), (2, 9991040), (4, 4995520), (5, 3996416), (8, 2497760), (10, 1998208), (16, 1248880), (20, 999104), (32, 624440), (40, 499552), (64, 312220), (67, 298240), (80, 249776), (128, 156110), (134, 149120), (160, 124888), (233, 85760), (256, 78055), (268, 74560), (320, 62444), (335, 59648), (466, 42880), (536, 37280), (640, 31222), (670, 29824), (932, 21440), (1072, 18640), (1165, 17152), (1280, 15611), (1340, 14912), (1864, 10720), (2144, 9320), (2330, 8576), (2680, 7456), (3728, 5360), (4288, 4660)]