21368156972

素因数分解:

$2^2\times {\mathrm{37}}^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1$

素因数の和:703

約数の個数: 72

約数和(自身を含む): 39380241600

約数和(自身を除く): 18012084628

約数列:

[1, 2, 4, 37, 67, 74, 134, 139, 148, 268, 278, 419, 556, 838, 1369, 1676, 2479, 2738, 4958, 5143, 5476, 9313, 9916, 10286, 15503, 18626, 20572, 28073, 31006, 37252, 56146, 58241, 62012, 91723, 112292, 116482, 183446, 190291, 232964, 344581, 366892, 380582, 573611, 689162, 761164, 1038701, 1147222, 1378324, 2077402, 2154917, 2294444, 3902147, 4154804, 4309834, 7804294, 8619668, 12749497, 15608588, 25498994, 38431937, 50997988, 76863874, 79731929, 144379439, 153727748, 159463858, 288758878, 318927716, 577517756, 5342039243, 10684078486, 21368156972]

約数ペア:

[(1, 21368156972), (2, 10684078486), (4, 5342039243), (37, 577517756), (67, 318927716), (74, 288758878), (134, 159463858), (139, 153727748), (148, 144379439), (268, 79731929), (278, 76863874), (419, 50997988), (556, 38431937), (838, 25498994), (1369, 15608588), (1676, 12749497), (2479, 8619668), (2738, 7804294), (4958, 4309834), (5143, 4154804), (5476, 3902147), (9313, 2294444), (9916, 2154917), (10286, 2077402), (15503, 1378324), (18626, 1147222), (20572, 1038701), (28073, 761164), (31006, 689162), (37252, 573611), (56146, 380582), (58241, 366892), (62012, 344581), (91723, 232964), (112292, 190291), (116482, 183446)]