18837520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:392

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 29284400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 59, 65, 80, 104, 118, 130, 208, 236, 260, 295, 307, 472, 520, 590, 614, 767, 944, 1040, 1180, 1228, 1534, 1535, 2360, 2456, 3068, 3070, 3835, 3991, 4720, 4912, 6136, 6140, 7670, 7982, 12272, 12280, 15340, 15964, 18113, 19955, 24560, 30680, 31928, 36226, 39910, 61360, 63856, 72452, 79820, 90565, 144904, 159640, 181130, 235469, 289808, 319280, 362260, 470938, 724520, 941876, 1177345, 1449040, 1883752, 2354690, 3767504, 4709380, 9418760, 18837520]

約数ペア:

[(1, 18837520), (2, 9418760), (4, 4709380), (5, 3767504), (8, 2354690), (10, 1883752), (13, 1449040), (16, 1177345), (20, 941876), (26, 724520), (40, 470938), (52, 362260), (59, 319280), (65, 289808), (80, 235469), (104, 181130), (118, 159640), (130, 144904), (208, 90565), (236, 79820), (260, 72452), (295, 63856), (307, 61360), (472, 39910), (520, 36226), (590, 31928), (614, 30680), (767, 24560), (944, 19955), (1040, 18113), (1180, 15964), (1228, 15340), (1534, 12280), (1535, 12272), (2360, 7982), (2456, 7670), (3068, 6140), (3070, 6136), (3835, 4912), (3991, 4720)]