21329308

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{761}}^1$

素因数の和:803

約数の個数: 72

約数和(自身を含む): 51078384

約数和(自身を除く): 29749076

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 143, 154, 182, 196, 286, 308, 364, 539, 572, 637, 761, 1001, 1078, 1274, 1522, 2002, 2156, 2548, 3044, 4004, 5327, 7007, 8371, 9893, 10654, 14014, 16742, 19786, 21308, 28028, 33484, 37289, 39572, 58597, 69251, 74578, 108823, 117194, 138502, 149156, 217646, 234388, 277004, 410179, 435292, 484757, 761761, 820358, 969514, 1523522, 1640716, 1939028, 3047044, 5332327, 10664654, 21329308]

約数ペア:

[(1, 21329308), (2, 10664654), (4, 5332327), (7, 3047044), (11, 1939028), (13, 1640716), (14, 1523522), (22, 969514), (26, 820358), (28, 761761), (44, 484757), (49, 435292), (52, 410179), (77, 277004), (91, 234388), (98, 217646), (143, 149156), (154, 138502), (182, 117194), (196, 108823), (286, 74578), (308, 69251), (364, 58597), (539, 39572), (572, 37289), (637, 33484), (761, 28028), (1001, 21308), (1078, 19786), (1274, 16742), (1522, 14014), (2002, 10654), (2156, 9893), (2548, 8371), (3044, 7007), (4004, 5327)]