1281040

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:319

約数の個数: 40

約数和(自身を含む): 3035520

約数和(自身を除く): 1754480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 239, 268, 335, 478, 536, 670, 956, 1072, 1195, 1340, 1912, 2390, 2680, 3824, 4780, 5360, 9560, 16013, 19120, 32026, 64052, 80065, 128104, 160130, 256208, 320260, 640520, 1281040]

約数ペア:

[(1, 1281040), (2, 640520), (4, 320260), (5, 256208), (8, 160130), (10, 128104), (16, 80065), (20, 64052), (40, 32026), (67, 19120), (80, 16013), (134, 9560), (239, 5360), (268, 4780), (335, 3824), (478, 2680), (536, 2390), (670, 1912), (956, 1340), (1072, 1195)]