81770240

素因数分解:

$2^8\times 5^1\times {\mathrm{193}}^1\times {\mathrm{331}}^1$

素因数の和:545

約数の個数: 72

約数和(自身を含む): 197474928

約数和(自身を除く): 115704688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 193, 256, 320, 331, 386, 640, 662, 772, 965, 1280, 1324, 1544, 1655, 1930, 2648, 3088, 3310, 3860, 5296, 6176, 6620, 7720, 10592, 12352, 13240, 15440, 21184, 24704, 26480, 30880, 42368, 49408, 52960, 61760, 63883, 84736, 105920, 123520, 127766, 211840, 247040, 255532, 319415, 423680, 511064, 638830, 1022128, 1277660, 2044256, 2555320, 4088512, 5110640, 8177024, 10221280, 16354048, 20442560, 40885120, 81770240]

約数ペア:

[(1, 81770240), (2, 40885120), (4, 20442560), (5, 16354048), (8, 10221280), (10, 8177024), (16, 5110640), (20, 4088512), (32, 2555320), (40, 2044256), (64, 1277660), (80, 1022128), (128, 638830), (160, 511064), (193, 423680), (256, 319415), (320, 255532), (331, 247040), (386, 211840), (640, 127766), (662, 123520), (772, 105920), (965, 84736), (1280, 63883), (1324, 61760), (1544, 52960), (1655, 49408), (1930, 42368), (2648, 30880), (3088, 26480), (3310, 24704), (3860, 21184), (5296, 15440), (6176, 13240), (6620, 12352), (7720, 10592)]