21100086

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:578

約数の個数: 72

約数和(自身を含む): 54419040

約数和(自身を除く): 33318954

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 47, 49, 63, 94, 98, 126, 141, 147, 282, 294, 329, 423, 441, 509, 658, 846, 882, 987, 1018, 1527, 1974, 2303, 2961, 3054, 3563, 4581, 4606, 5922, 6909, 7126, 9162, 10689, 13818, 20727, 21378, 23923, 24941, 32067, 41454, 47846, 49882, 64134, 71769, 74823, 143538, 149646, 167461, 215307, 224469, 334922, 430614, 448938, 502383, 1004766, 1172227, 1507149, 2344454, 3014298, 3516681, 7033362, 10550043, 21100086]

約数ペア:

[(1, 21100086), (2, 10550043), (3, 7033362), (6, 3516681), (7, 3014298), (9, 2344454), (14, 1507149), (18, 1172227), (21, 1004766), (42, 502383), (47, 448938), (49, 430614), (63, 334922), (94, 224469), (98, 215307), (126, 167461), (141, 149646), (147, 143538), (282, 74823), (294, 71769), (329, 64134), (423, 49882), (441, 47846), (509, 41454), (658, 32067), (846, 24941), (882, 23923), (987, 21378), (1018, 20727), (1527, 13818), (1974, 10689), (2303, 9162), (2961, 7126), (3054, 6909), (3563, 5922), (4581, 4606)]