21406710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 55883520

約数和(自身を除く): 34476810

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 131, 195, 262, 390, 393, 419, 655, 786, 838, 1257, 1310, 1703, 1965, 2095, 2514, 3406, 3930, 4190, 5109, 5447, 6285, 8515, 10218, 10894, 12570, 16341, 17030, 25545, 27235, 32682, 51090, 54470, 54889, 81705, 109778, 163410, 164667, 274445, 329334, 548890, 713557, 823335, 1427114, 1646670, 2140671, 3567785, 4281342, 7135570, 10703355, 21406710]

約数ペア:

[(1, 21406710), (2, 10703355), (3, 7135570), (5, 4281342), (6, 3567785), (10, 2140671), (13, 1646670), (15, 1427114), (26, 823335), (30, 713557), (39, 548890), (65, 329334), (78, 274445), (130, 164667), (131, 163410), (195, 109778), (262, 81705), (390, 54889), (393, 54470), (419, 51090), (655, 32682), (786, 27235), (838, 25545), (1257, 17030), (1310, 16341), (1703, 12570), (1965, 10894), (2095, 10218), (2514, 8515), (3406, 6285), (3930, 5447), (4190, 5109)]