21159970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1171}}^1$

素因数の和:1330

約数の個数: 32

約数和(自身を含む): 41348160

約数和(自身を除く): 20188190

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 695, 1171, 1390, 1807, 2342, 3614, 5855, 9035, 11710, 15223, 18070, 30446, 76115, 152230, 162769, 325538, 813845, 1627690, 2115997, 4231994, 10579985, 21159970]

約数ペア:

[(1, 21159970), (2, 10579985), (5, 4231994), (10, 2115997), (13, 1627690), (26, 813845), (65, 325538), (130, 162769), (139, 152230), (278, 76115), (695, 30446), (1171, 18070), (1390, 15223), (1807, 11710), (2342, 9035), (3614, 5855)]