81346040

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 188006400

約数和(自身を除く): 106660360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 127, 134, 239, 254, 268, 335, 478, 508, 536, 635, 670, 956, 1016, 1195, 1270, 1340, 1912, 2390, 2540, 2680, 4780, 5080, 8509, 9560, 16013, 17018, 30353, 32026, 34036, 42545, 60706, 64052, 68072, 80065, 85090, 121412, 128104, 151765, 160130, 170180, 242824, 303530, 320260, 340360, 607060, 640520, 1214120, 2033651, 4067302, 8134604, 10168255, 16269208, 20336510, 40673020, 81346040]

約数ペア:

[(1, 81346040), (2, 40673020), (4, 20336510), (5, 16269208), (8, 10168255), (10, 8134604), (20, 4067302), (40, 2033651), (67, 1214120), (127, 640520), (134, 607060), (239, 340360), (254, 320260), (268, 303530), (335, 242824), (478, 170180), (508, 160130), (536, 151765), (635, 128104), (670, 121412), (956, 85090), (1016, 80065), (1195, 68072), (1270, 64052), (1340, 60706), (1912, 42545), (2390, 34036), (2540, 32026), (2680, 30353), (4780, 17018), (5080, 16013), (8509, 9560)]