21748419

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{317}}^1$

素因数の和:358

約数の個数: 60

約数和(自身を含む): 40940592

約数和(自身を除く): 19192173

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 121, 189, 231, 297, 317, 363, 567, 693, 847, 891, 951, 1089, 2079, 2219, 2541, 2853, 3267, 3487, 6237, 6657, 7623, 8559, 9801, 10461, 19971, 22869, 24409, 25677, 31383, 38357, 59913, 68607, 73227, 94149, 115071, 179739, 219681, 268499, 282447, 345213, 659043, 805497, 1035639, 1977129, 2416491, 3106917, 7249473, 21748419]

約数ペア:

[(1, 21748419), (3, 7249473), (7, 3106917), (9, 2416491), (11, 1977129), (21, 1035639), (27, 805497), (33, 659043), (63, 345213), (77, 282447), (81, 268499), (99, 219681), (121, 179739), (189, 115071), (231, 94149), (297, 73227), (317, 68607), (363, 59913), (567, 38357), (693, 31383), (847, 25677), (891, 24409), (951, 22869), (1089, 19971), (2079, 10461), (2219, 9801), (2541, 8559), (2853, 7623), (3267, 6657), (3487, 6237)]