19148787

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 14397453

約数列:

[1, 3, 7, 9, 21, 29, 47, 63, 87, 141, 203, 223, 261, 329, 423, 609, 669, 987, 1363, 1561, 1827, 2007, 2961, 4089, 4683, 6467, 9541, 10481, 12267, 14049, 19401, 28623, 31443, 45269, 58203, 73367, 85869, 94329, 135807, 220101, 303949, 407421, 660303, 911847, 2127643, 2735541, 6382929, 19148787]

約数ペア:

[(1, 19148787), (3, 6382929), (7, 2735541), (9, 2127643), (21, 911847), (29, 660303), (47, 407421), (63, 303949), (87, 220101), (141, 135807), (203, 94329), (223, 85869), (261, 73367), (329, 58203), (423, 45269), (609, 31443), (669, 28623), (987, 19401), (1363, 14049), (1561, 12267), (1827, 10481), (2007, 9541), (2961, 6467), (4089, 4683)]