30780520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 72483840

約数和(自身を除く): 41703320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 103, 124, 155, 206, 241, 248, 310, 412, 482, 515, 620, 824, 964, 1030, 1205, 1240, 1928, 2060, 2410, 3193, 4120, 4820, 6386, 7471, 9640, 12772, 14942, 15965, 24823, 25544, 29884, 31930, 37355, 49646, 59768, 63860, 74710, 99292, 124115, 127720, 149420, 198584, 248230, 298840, 496460, 769513, 992920, 1539026, 3078052, 3847565, 6156104, 7695130, 15390260, 30780520]

約数ペア:

[(1, 30780520), (2, 15390260), (4, 7695130), (5, 6156104), (8, 3847565), (10, 3078052), (20, 1539026), (31, 992920), (40, 769513), (62, 496460), (103, 298840), (124, 248230), (155, 198584), (206, 149420), (241, 127720), (248, 124115), (310, 99292), (412, 74710), (482, 63860), (515, 59768), (620, 49646), (824, 37355), (964, 31930), (1030, 29884), (1205, 25544), (1240, 24823), (1928, 15965), (2060, 14942), (2410, 12772), (3193, 9640), (4120, 7471), (4820, 6386)]