21479360

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:290

約数の個数: 112

約数和(自身を含む): 60082176

約数和(自身を除く): 38602816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 64, 70, 80, 86, 112, 140, 160, 172, 215, 223, 224, 280, 301, 320, 344, 430, 446, 448, 560, 602, 688, 860, 892, 1115, 1120, 1204, 1376, 1505, 1561, 1720, 1784, 2230, 2240, 2408, 2752, 3010, 3122, 3440, 3568, 4460, 4816, 6020, 6244, 6880, 7136, 7805, 8920, 9589, 9632, 12040, 12488, 13760, 14272, 15610, 17840, 19178, 19264, 24080, 24976, 31220, 35680, 38356, 47945, 48160, 49952, 62440, 67123, 71360, 76712, 95890, 96320, 99904, 124880, 134246, 153424, 191780, 249760, 268492, 306848, 335615, 383560, 499520, 536984, 613696, 671230, 767120, 1073968, 1342460, 1534240, 2147936, 2684920, 3068480, 4295872, 5369840, 10739680, 21479360]

約数ペア:

[(1, 21479360), (2, 10739680), (4, 5369840), (5, 4295872), (7, 3068480), (8, 2684920), (10, 2147936), (14, 1534240), (16, 1342460), (20, 1073968), (28, 767120), (32, 671230), (35, 613696), (40, 536984), (43, 499520), (56, 383560), (64, 335615), (70, 306848), (80, 268492), (86, 249760), (112, 191780), (140, 153424), (160, 134246), (172, 124880), (215, 99904), (223, 96320), (224, 95890), (280, 76712), (301, 71360), (320, 67123), (344, 62440), (430, 49952), (446, 48160), (448, 47945), (560, 38356), (602, 35680), (688, 31220), (860, 24976), (892, 24080), (1115, 19264), (1120, 19178), (1204, 17840), (1376, 15610), (1505, 14272), (1561, 13760), (1720, 12488), (1784, 12040), (2230, 9632), (2240, 9589), (2408, 8920), (2752, 7805), (3010, 7136), (3122, 6880), (3440, 6244), (3568, 6020), (4460, 4816)]