20871424

素因数分解:

$2^8\times 7^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:655

約数の個数: 72

約数和(自身を含む): 50200640

約数和(自身を除く): 29329216

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 128, 133, 152, 224, 256, 266, 304, 448, 532, 608, 613, 896, 1064, 1216, 1226, 1792, 2128, 2432, 2452, 4256, 4291, 4864, 4904, 8512, 8582, 9808, 11647, 17024, 17164, 19616, 23294, 34048, 34328, 39232, 46588, 68656, 78464, 81529, 93176, 137312, 156928, 163058, 186352, 274624, 326116, 372704, 549248, 652232, 745408, 1098496, 1304464, 1490816, 2608928, 2981632, 5217856, 10435712, 20871424]

約数ペア:

[(1, 20871424), (2, 10435712), (4, 5217856), (7, 2981632), (8, 2608928), (14, 1490816), (16, 1304464), (19, 1098496), (28, 745408), (32, 652232), (38, 549248), (56, 372704), (64, 326116), (76, 274624), (112, 186352), (128, 163058), (133, 156928), (152, 137312), (224, 93176), (256, 81529), (266, 78464), (304, 68656), (448, 46588), (532, 39232), (608, 34328), (613, 34048), (896, 23294), (1064, 19616), (1216, 17164), (1226, 17024), (1792, 11647), (2128, 9808), (2432, 8582), (2452, 8512), (4256, 4904), (4291, 4864)]