21939036

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{5557}}^1$

素因数の和:5618

約数の個数: 48

約数和(自身を含む): 59759616

約数和(自身を除く): 37820580

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 47, 84, 94, 141, 188, 282, 329, 564, 658, 987, 1316, 1974, 3948, 5557, 11114, 16671, 22228, 33342, 38899, 66684, 77798, 116697, 155596, 233394, 261179, 466788, 522358, 783537, 1044716, 1567074, 1828253, 3134148, 3656506, 5484759, 7313012, 10969518, 21939036]

約数ペア:

[(1, 21939036), (2, 10969518), (3, 7313012), (4, 5484759), (6, 3656506), (7, 3134148), (12, 1828253), (14, 1567074), (21, 1044716), (28, 783537), (42, 522358), (47, 466788), (84, 261179), (94, 233394), (141, 155596), (188, 116697), (282, 77798), (329, 66684), (564, 38899), (658, 33342), (987, 22228), (1316, 16671), (1974, 11114), (3948, 5557)]