21691010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{6361}}^1$

素因数の和:6410

約数の個数: 32

約数和(自身を含む): 43974144

約数和(自身を除く): 22283134

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 310, 341, 682, 1705, 3410, 6361, 12722, 31805, 63610, 69971, 139942, 197191, 349855, 394382, 699710, 985955, 1971910, 2169101, 4338202, 10845505, 21691010]

約数ペア:

[(1, 21691010), (2, 10845505), (5, 4338202), (10, 2169101), (11, 1971910), (22, 985955), (31, 699710), (55, 394382), (62, 349855), (110, 197191), (155, 139942), (310, 69971), (341, 63610), (682, 31805), (1705, 12722), (3410, 6361)]