21907808

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{4051}}^1$

素因数の和:4087

約数の個数: 36

約数和(自身を含む): 46715508

約数和(自身を除く): 24807700

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 4051, 5408, 8102, 16204, 32408, 52663, 64816, 105326, 129632, 210652, 421304, 684619, 842608, 1369238, 1685216, 2738476, 5476952, 10953904, 21907808]

約数ペア:

[(1, 21907808), (2, 10953904), (4, 5476952), (8, 2738476), (13, 1685216), (16, 1369238), (26, 842608), (32, 684619), (52, 421304), (104, 210652), (169, 129632), (208, 105326), (338, 64816), (416, 52663), (676, 32408), (1352, 16204), (2704, 8102), (4051, 5408)]