28478720

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1171}}^1$

素因数の和:1211

約数の個数: 72

約数和(自身を含む): 71867040

約数和(自身を除く): 43388320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 1171, 1216, 1280, 1520, 2342, 2432, 3040, 4684, 4864, 5855, 6080, 9368, 11710, 12160, 18736, 22249, 23420, 24320, 37472, 44498, 46840, 74944, 88996, 93680, 111245, 149888, 177992, 187360, 222490, 299776, 355984, 374720, 444980, 711968, 749440, 889960, 1423936, 1498880, 1779920, 2847872, 3559840, 5695744, 7119680, 14239360, 28478720]

約数ペア:

[(1, 28478720), (2, 14239360), (4, 7119680), (5, 5695744), (8, 3559840), (10, 2847872), (16, 1779920), (19, 1498880), (20, 1423936), (32, 889960), (38, 749440), (40, 711968), (64, 444980), (76, 374720), (80, 355984), (95, 299776), (128, 222490), (152, 187360), (160, 177992), (190, 149888), (256, 111245), (304, 93680), (320, 88996), (380, 74944), (608, 46840), (640, 44498), (760, 37472), (1171, 24320), (1216, 23420), (1280, 22249), (1520, 18736), (2342, 12160), (2432, 11710), (3040, 9368), (4684, 6080), (4864, 5855)]