21652904

素因数分解:

$2^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:647

約数の個数: 64

約数和(自身を含む): 51072000

約数和(自身を除く): 29419096

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 343, 364, 392, 607, 637, 686, 728, 1214, 1274, 1372, 2428, 2548, 2744, 4249, 4459, 4856, 5096, 7891, 8498, 8918, 15782, 16996, 17836, 29743, 31564, 33992, 35672, 55237, 59486, 63128, 110474, 118972, 208201, 220948, 237944, 386659, 416402, 441896, 773318, 832804, 1546636, 1665608, 2706613, 3093272, 5413226, 10826452, 21652904]

約数ペア:

[(1, 21652904), (2, 10826452), (4, 5413226), (7, 3093272), (8, 2706613), (13, 1665608), (14, 1546636), (26, 832804), (28, 773318), (49, 441896), (52, 416402), (56, 386659), (91, 237944), (98, 220948), (104, 208201), (182, 118972), (196, 110474), (343, 63128), (364, 59486), (392, 55237), (607, 35672), (637, 33992), (686, 31564), (728, 29743), (1214, 17836), (1274, 16996), (1372, 15782), (2428, 8918), (2548, 8498), (2744, 7891), (4249, 5096), (4459, 4856)]