21702340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{4289}}^1$

素因数の和:4332

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 30189500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 4289, 5060, 8578, 17156, 21445, 42890, 47179, 85780, 94358, 98647, 188716, 197294, 235895, 394588, 471790, 493235, 943580, 986470, 1085117, 1972940, 2170234, 4340468, 5425585, 10851170, 21702340]

約数ペア:

[(1, 21702340), (2, 10851170), (4, 5425585), (5, 4340468), (10, 2170234), (11, 1972940), (20, 1085117), (22, 986470), (23, 943580), (44, 493235), (46, 471790), (55, 394588), (92, 235895), (110, 197294), (115, 188716), (220, 98647), (230, 94358), (253, 85780), (460, 47179), (506, 42890), (1012, 21445), (1265, 17156), (2530, 8578), (4289, 5060)]