212129900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1669}}^1$

素因数の和:1755

約数の個数: 72

約数和(自身を含む): 487052160

約数和(自身を除く): 274922260

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 155, 164, 205, 310, 410, 620, 775, 820, 1025, 1271, 1550, 1669, 2050, 2542, 3100, 3338, 4100, 5084, 6355, 6676, 8345, 12710, 16690, 25420, 31775, 33380, 41725, 51739, 63550, 68429, 83450, 103478, 127100, 136858, 166900, 206956, 258695, 273716, 342145, 517390, 684290, 1034780, 1293475, 1368580, 1710725, 2121299, 2586950, 3421450, 4242598, 5173900, 6842900, 8485196, 10606495, 21212990, 42425980, 53032475, 106064950, 212129900]

約数ペア:

[(1, 212129900), (2, 106064950), (4, 53032475), (5, 42425980), (10, 21212990), (20, 10606495), (25, 8485196), (31, 6842900), (41, 5173900), (50, 4242598), (62, 3421450), (82, 2586950), (100, 2121299), (124, 1710725), (155, 1368580), (164, 1293475), (205, 1034780), (310, 684290), (410, 517390), (620, 342145), (775, 273716), (820, 258695), (1025, 206956), (1271, 166900), (1550, 136858), (1669, 127100), (2050, 103478), (2542, 83450), (3100, 68429), (3338, 63550), (4100, 51739), (5084, 41725), (6355, 33380), (6676, 31775), (8345, 25420), (12710, 16690)]