21689164

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2699}}^1$

素因数の和:2758

約数の個数: 36

約数和(自身を含む): 45246600

約数和(自身を除く): 23557436

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 2699, 4018, 5398, 8036, 10796, 18893, 37786, 75572, 110659, 132251, 221318, 264502, 442636, 529004, 774613, 1549226, 3098452, 5422291, 10844582, 21689164]

約数ペア:

[(1, 21689164), (2, 10844582), (4, 5422291), (7, 3098452), (14, 1549226), (28, 774613), (41, 529004), (49, 442636), (82, 264502), (98, 221318), (164, 132251), (196, 110659), (287, 75572), (574, 37786), (1148, 18893), (2009, 10796), (2699, 8036), (4018, 5398)]