21167140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1051}}^1$

素因数の和:1132

約数の個数: 48

約数和(自身を含む): 47718720

約数和(自身を除く): 26551580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 1007, 1051, 1060, 2014, 2102, 4028, 4204, 5035, 5255, 10070, 10510, 19969, 20140, 21020, 39938, 55703, 79876, 99845, 111406, 199690, 222812, 278515, 399380, 557030, 1058357, 1114060, 2116714, 4233428, 5291785, 10583570, 21167140]

約数ペア:

[(1, 21167140), (2, 10583570), (4, 5291785), (5, 4233428), (10, 2116714), (19, 1114060), (20, 1058357), (38, 557030), (53, 399380), (76, 278515), (95, 222812), (106, 199690), (190, 111406), (212, 99845), (265, 79876), (380, 55703), (530, 39938), (1007, 21020), (1051, 20140), (1060, 19969), (2014, 10510), (2102, 10070), (4028, 5255), (4204, 5035)]