21870654

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1$

素因数の和:281

約数の個数: 64

約数和(自身を含む): 50125824

約数和(自身を除く): 28255170

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 73, 78, 138, 146, 167, 219, 299, 334, 438, 501, 598, 897, 949, 1002, 1679, 1794, 1898, 2171, 2847, 3358, 3841, 4342, 5037, 5694, 6513, 7682, 10074, 11523, 12191, 13026, 21827, 23046, 24382, 36573, 43654, 49933, 65481, 73146, 99866, 130962, 149799, 158483, 280393, 299598, 316966, 475449, 560786, 841179, 950898, 1682358, 3645109, 7290218, 10935327, 21870654]

約数ペア:

[(1, 21870654), (2, 10935327), (3, 7290218), (6, 3645109), (13, 1682358), (23, 950898), (26, 841179), (39, 560786), (46, 475449), (69, 316966), (73, 299598), (78, 280393), (138, 158483), (146, 149799), (167, 130962), (219, 99866), (299, 73146), (334, 65481), (438, 49933), (501, 43654), (598, 36573), (897, 24382), (949, 23046), (1002, 21827), (1679, 13026), (1794, 12191), (1898, 11523), (2171, 10074), (2847, 7682), (3358, 6513), (3841, 5694), (4342, 5037)]