31257920

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 112

約数和(自身を含む): 80759808

約数和(自身を除く): 49501888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 137, 155, 160, 184, 230, 248, 274, 310, 320, 368, 460, 496, 548, 620, 685, 713, 736, 920, 992, 1096, 1240, 1370, 1426, 1472, 1840, 1984, 2192, 2480, 2740, 2852, 3151, 3565, 3680, 4247, 4384, 4960, 5480, 5704, 6302, 7130, 7360, 8494, 8768, 9920, 10960, 11408, 12604, 14260, 15755, 16988, 21235, 21920, 22816, 25208, 28520, 31510, 33976, 42470, 43840, 45632, 50416, 57040, 63020, 67952, 84940, 97681, 100832, 114080, 126040, 135904, 169880, 195362, 201664, 228160, 252080, 271808, 339760, 390724, 488405, 504160, 679520, 781448, 976810, 1008320, 1359040, 1562896, 1953620, 3125792, 3907240, 6251584, 7814480, 15628960, 31257920]

約数ペア:

[(1, 31257920), (2, 15628960), (4, 7814480), (5, 6251584), (8, 3907240), (10, 3125792), (16, 1953620), (20, 1562896), (23, 1359040), (31, 1008320), (32, 976810), (40, 781448), (46, 679520), (62, 504160), (64, 488405), (80, 390724), (92, 339760), (115, 271808), (124, 252080), (137, 228160), (155, 201664), (160, 195362), (184, 169880), (230, 135904), (248, 126040), (274, 114080), (310, 100832), (320, 97681), (368, 84940), (460, 67952), (496, 63020), (548, 57040), (620, 50416), (685, 45632), (713, 43840), (736, 42470), (920, 33976), (992, 31510), (1096, 28520), (1240, 25208), (1370, 22816), (1426, 21920), (1472, 21235), (1840, 16988), (1984, 15755), (2192, 14260), (2480, 12604), (2740, 11408), (2852, 10960), (3151, 9920), (3565, 8768), (3680, 8494), (4247, 7360), (4384, 7130), (4960, 6302), (5480, 5704)]