21007844

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1933}}^1$

素因数の和:1980

約数の個数: 48

約数和(自身を含む): 45487680

約数和(自身を除く): 24479836

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 209, 247, 286, 418, 494, 572, 836, 988, 1933, 2717, 3866, 5434, 7732, 10868, 21263, 25129, 36727, 42526, 50258, 73454, 85052, 100516, 146908, 276419, 403997, 477451, 552838, 807994, 954902, 1105676, 1615988, 1909804, 5251961, 10503922, 21007844]

約数ペア:

[(1, 21007844), (2, 10503922), (4, 5251961), (11, 1909804), (13, 1615988), (19, 1105676), (22, 954902), (26, 807994), (38, 552838), (44, 477451), (52, 403997), (76, 276419), (143, 146908), (209, 100516), (247, 85052), (286, 73454), (418, 50258), (494, 42526), (572, 36727), (836, 25129), (988, 21263), (1933, 10868), (2717, 7732), (3866, 5434)]