820491520

素因数分解:

$2^8\times 5^1\times {\mathrm{83}}^1\times {\mathrm{7723}}^1$

素因数の和:7827

約数の個数: 72

約数和(自身を含む): 1989269856

約数和(自身を除く): 1168778336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 128, 160, 166, 256, 320, 332, 415, 640, 664, 830, 1280, 1328, 1660, 2656, 3320, 5312, 6640, 7723, 10624, 13280, 15446, 21248, 26560, 30892, 38615, 53120, 61784, 77230, 106240, 123568, 154460, 247136, 308920, 494272, 617840, 641009, 988544, 1235680, 1282018, 1977088, 2471360, 2564036, 3205045, 4942720, 5128072, 6410090, 9885440, 10256144, 12820180, 20512288, 25640360, 41024576, 51280720, 82049152, 102561440, 164098304, 205122880, 410245760, 820491520]

約数ペア:

[(1, 820491520), (2, 410245760), (4, 205122880), (5, 164098304), (8, 102561440), (10, 82049152), (16, 51280720), (20, 41024576), (32, 25640360), (40, 20512288), (64, 12820180), (80, 10256144), (83, 9885440), (128, 6410090), (160, 5128072), (166, 4942720), (256, 3205045), (320, 2564036), (332, 2471360), (415, 1977088), (640, 1282018), (664, 1235680), (830, 988544), (1280, 641009), (1328, 617840), (1660, 494272), (2656, 308920), (3320, 247136), (5312, 154460), (6640, 123568), (7723, 106240), (10624, 77230), (13280, 61784), (15446, 53120), (21248, 38615), (26560, 30892)]