26261320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 61689600

約数和(自身を除く): 35428280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 205, 239, 268, 328, 335, 410, 478, 536, 670, 820, 956, 1195, 1340, 1640, 1912, 2390, 2680, 2747, 4780, 5494, 9560, 9799, 10988, 13735, 16013, 19598, 21976, 27470, 32026, 39196, 48995, 54940, 64052, 78392, 80065, 97990, 109880, 128104, 160130, 195980, 320260, 391960, 640520, 656533, 1313066, 2626132, 3282665, 5252264, 6565330, 13130660, 26261320]

約数ペア:

[(1, 26261320), (2, 13130660), (4, 6565330), (5, 5252264), (8, 3282665), (10, 2626132), (20, 1313066), (40, 656533), (41, 640520), (67, 391960), (82, 320260), (134, 195980), (164, 160130), (205, 128104), (239, 109880), (268, 97990), (328, 80065), (335, 78392), (410, 64052), (478, 54940), (536, 48995), (670, 39196), (820, 32026), (956, 27470), (1195, 21976), (1340, 19598), (1640, 16013), (1912, 13735), (2390, 10988), (2680, 9799), (2747, 9560), (4780, 5494)]