21388796

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{613}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 44767968

約数和(自身を除く): 23379172

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 61, 122, 143, 244, 286, 572, 613, 671, 793, 1226, 1342, 1586, 2452, 2684, 3172, 6743, 7969, 8723, 13486, 15938, 17446, 26972, 31876, 34892, 37393, 74786, 87659, 149572, 175318, 350636, 411323, 486109, 822646, 972218, 1645292, 1944436, 5347199, 10694398, 21388796]

約数ペア:

[(1, 21388796), (2, 10694398), (4, 5347199), (11, 1944436), (13, 1645292), (22, 972218), (26, 822646), (44, 486109), (52, 411323), (61, 350636), (122, 175318), (143, 149572), (244, 87659), (286, 74786), (572, 37393), (613, 34892), (671, 31876), (793, 26972), (1226, 17446), (1342, 15938), (1586, 13486), (2452, 8723), (2684, 7969), (3172, 6743)]