19985664

素因数分解:

$2^8\times 3^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:563

約数の個数: 72

約数和(自身を含む): 54304992

約数和(自身を除く): 34319328

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 53, 64, 96, 106, 128, 159, 192, 212, 256, 318, 384, 424, 491, 636, 768, 848, 982, 1272, 1473, 1696, 1964, 2544, 2946, 3392, 3928, 5088, 5892, 6784, 7856, 10176, 11784, 13568, 15712, 20352, 23568, 26023, 31424, 40704, 47136, 52046, 62848, 78069, 94272, 104092, 125696, 156138, 188544, 208184, 312276, 377088, 416368, 624552, 832736, 1249104, 1665472, 2498208, 3330944, 4996416, 6661888, 9992832, 19985664]

約数ペア:

[(1, 19985664), (2, 9992832), (3, 6661888), (4, 4996416), (6, 3330944), (8, 2498208), (12, 1665472), (16, 1249104), (24, 832736), (32, 624552), (48, 416368), (53, 377088), (64, 312276), (96, 208184), (106, 188544), (128, 156138), (159, 125696), (192, 104092), (212, 94272), (256, 78069), (318, 62848), (384, 52046), (424, 47136), (491, 40704), (636, 31424), (768, 26023), (848, 23568), (982, 20352), (1272, 15712), (1473, 13568), (1696, 11784), (1964, 10176), (2544, 7856), (2946, 6784), (3392, 5892), (3928, 5088)]