1087972720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1\times {\mathrm{811}}^1$

素因数の和:1274

約数の個数: 80

約数和(自身を含む): 2600771040

約数和(自身を除く): 1512798320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 409, 410, 656, 811, 818, 820, 1622, 1636, 1640, 2045, 3244, 3272, 3280, 4055, 4090, 6488, 6544, 8110, 8180, 12976, 16220, 16360, 16769, 32440, 32720, 33251, 33538, 64880, 66502, 67076, 83845, 133004, 134152, 166255, 167690, 266008, 268304, 331699, 332510, 335380, 532016, 663398, 665020, 670760, 1326796, 1330040, 1341520, 1658495, 2653592, 2660080, 3316990, 5307184, 6633980, 13267960, 13599659, 26535920, 27199318, 54398636, 67998295, 108797272, 135996590, 217594544, 271993180, 543986360, 1087972720]

約数ペア:

[(1, 1087972720), (2, 543986360), (4, 271993180), (5, 217594544), (8, 135996590), (10, 108797272), (16, 67998295), (20, 54398636), (40, 27199318), (41, 26535920), (80, 13599659), (82, 13267960), (164, 6633980), (205, 5307184), (328, 3316990), (409, 2660080), (410, 2653592), (656, 1658495), (811, 1341520), (818, 1330040), (820, 1326796), (1622, 670760), (1636, 665020), (1640, 663398), (2045, 532016), (3244, 335380), (3272, 332510), (3280, 331699), (4055, 268304), (4090, 266008), (6488, 167690), (6544, 166255), (8110, 134152), (8180, 133004), (12976, 83845), (16220, 67076), (16360, 66502), (16769, 64880), (32440, 33538), (32720, 33251)]