21951688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{691}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 47457360

約数和(自身を除く): 25505672

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 361, 418, 691, 722, 836, 1382, 1444, 1672, 2764, 2888, 3971, 5528, 7601, 7942, 13129, 15202, 15884, 26258, 30404, 31768, 52516, 60808, 105032, 144419, 249451, 288838, 498902, 577676, 997804, 1155352, 1995608, 2743961, 5487922, 10975844, 21951688]

約数ペア:

[(1, 21951688), (2, 10975844), (4, 5487922), (8, 2743961), (11, 1995608), (19, 1155352), (22, 997804), (38, 577676), (44, 498902), (76, 288838), (88, 249451), (152, 144419), (209, 105032), (361, 60808), (418, 52516), (691, 31768), (722, 30404), (836, 26258), (1382, 15884), (1444, 15202), (1672, 13129), (2764, 7942), (2888, 7601), (3971, 5528)]