21215264

素因数分解:

$2^5\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1787}}^1$

素因数の和:1857

約数の個数: 48

約数和(自身を含む): 48662208

約数和(自身を除く): 27446944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 53, 56, 106, 112, 212, 224, 371, 424, 742, 848, 1484, 1696, 1787, 2968, 3574, 5936, 7148, 11872, 12509, 14296, 25018, 28592, 50036, 57184, 94711, 100072, 189422, 200144, 378844, 400288, 662977, 757688, 1325954, 1515376, 2651908, 3030752, 5303816, 10607632, 21215264]

約数ペア:

[(1, 21215264), (2, 10607632), (4, 5303816), (7, 3030752), (8, 2651908), (14, 1515376), (16, 1325954), (28, 757688), (32, 662977), (53, 400288), (56, 378844), (106, 200144), (112, 189422), (212, 100072), (224, 94711), (371, 57184), (424, 50036), (742, 28592), (848, 25018), (1484, 14296), (1696, 12509), (1787, 11872), (2968, 7148), (3574, 5936)]