21150915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{607}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 14570301

約数列:

[1, 3, 5, 15, 23, 69, 101, 115, 303, 345, 505, 607, 1515, 1821, 2323, 3035, 6969, 9105, 11615, 13961, 34845, 41883, 61307, 69805, 183921, 209415, 306535, 919605, 1410061, 4230183, 7050305, 21150915]

約数ペア:

[(1, 21150915), (3, 7050305), (5, 4230183), (15, 1410061), (23, 919605), (69, 306535), (101, 209415), (115, 183921), (303, 69805), (345, 61307), (505, 41883), (607, 34845), (1515, 13961), (1821, 11615), (2323, 9105), (3035, 6969)]