72401680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1619}}^1$

素因数の和:1688

約数の個数: 80

約数和(自身を含む): 185613120

約数和(自身を除く): 113211440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1619, 1720, 2236, 2795, 3238, 3440, 4472, 5590, 6476, 8095, 8944, 11180, 12952, 16190, 21047, 22360, 25904, 32380, 42094, 44720, 64760, 69617, 84188, 105235, 129520, 139234, 168376, 210470, 278468, 336752, 348085, 420940, 556936, 696170, 841880, 905021, 1113872, 1392340, 1683760, 1810042, 2784680, 3620084, 4525105, 5569360, 7240168, 9050210, 14480336, 18100420, 36200840, 72401680]

約数ペア:

[(1, 72401680), (2, 36200840), (4, 18100420), (5, 14480336), (8, 9050210), (10, 7240168), (13, 5569360), (16, 4525105), (20, 3620084), (26, 2784680), (40, 1810042), (43, 1683760), (52, 1392340), (65, 1113872), (80, 905021), (86, 841880), (104, 696170), (130, 556936), (172, 420940), (208, 348085), (215, 336752), (260, 278468), (344, 210470), (430, 168376), (520, 139234), (559, 129520), (688, 105235), (860, 84188), (1040, 69617), (1118, 64760), (1619, 44720), (1720, 42094), (2236, 32380), (2795, 25904), (3238, 22360), (3440, 21047), (4472, 16190), (5590, 12952), (6476, 11180), (8095, 8944)]