21277568

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{673}}^1$

素因数の和:719

約数の個数: 64

約数和(自身を含む): 48123600

約数和(自身を除く): 26846032

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 64, 76, 104, 128, 152, 208, 247, 304, 416, 494, 608, 673, 832, 988, 1216, 1346, 1664, 1976, 2432, 2692, 3952, 5384, 7904, 8749, 10768, 12787, 15808, 17498, 21536, 25574, 31616, 34996, 43072, 51148, 69992, 86144, 102296, 139984, 166231, 204592, 279968, 332462, 409184, 559936, 664924, 818368, 1119872, 1329848, 1636736, 2659696, 5319392, 10638784, 21277568]

約数ペア:

[(1, 21277568), (2, 10638784), (4, 5319392), (8, 2659696), (13, 1636736), (16, 1329848), (19, 1119872), (26, 818368), (32, 664924), (38, 559936), (52, 409184), (64, 332462), (76, 279968), (104, 204592), (128, 166231), (152, 139984), (208, 102296), (247, 86144), (304, 69992), (416, 51148), (494, 43072), (608, 34996), (673, 31616), (832, 25574), (988, 21536), (1216, 17498), (1346, 15808), (1664, 12787), (1976, 10768), (2432, 8749), (2692, 7904), (3952, 5384)]