21028590

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1931}}^1$

素因数の和:1966

約数の個数: 72

約数和(自身を含む): 60127704

約数和(自身を除く): 39099114

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 121, 165, 198, 242, 330, 363, 495, 605, 726, 990, 1089, 1210, 1815, 1931, 2178, 3630, 3862, 5445, 5793, 9655, 10890, 11586, 17379, 19310, 21241, 28965, 34758, 42482, 57930, 63723, 86895, 106205, 127446, 173790, 191169, 212410, 233651, 318615, 382338, 467302, 637230, 700953, 955845, 1168255, 1401906, 1911690, 2102859, 2336510, 3504765, 4205718, 7009530, 10514295, 21028590]

約数ペア:

[(1, 21028590), (2, 10514295), (3, 7009530), (5, 4205718), (6, 3504765), (9, 2336510), (10, 2102859), (11, 1911690), (15, 1401906), (18, 1168255), (22, 955845), (30, 700953), (33, 637230), (45, 467302), (55, 382338), (66, 318615), (90, 233651), (99, 212410), (110, 191169), (121, 173790), (165, 127446), (198, 106205), (242, 86895), (330, 63723), (363, 57930), (495, 42482), (605, 34758), (726, 28965), (990, 21241), (1089, 19310), (1210, 17379), (1815, 11586), (1931, 10890), (2178, 9655), (3630, 5793), (3862, 5445)]