21697572

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^3\times {\mathrm{823}}^1$

素因数の和:869

約数の個数: 48

約数和(自身を含む): 54911360

約数和(自身を除く): 33213788

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 823, 1014, 1646, 2028, 2197, 2469, 3292, 4394, 4938, 6591, 8788, 9876, 10699, 13182, 21398, 26364, 32097, 42796, 64194, 128388, 139087, 278174, 417261, 556348, 834522, 1669044, 1808131, 3616262, 5424393, 7232524, 10848786, 21697572]

約数ペア:

[(1, 21697572), (2, 10848786), (3, 7232524), (4, 5424393), (6, 3616262), (12, 1808131), (13, 1669044), (26, 834522), (39, 556348), (52, 417261), (78, 278174), (156, 139087), (169, 128388), (338, 64194), (507, 42796), (676, 32097), (823, 26364), (1014, 21398), (1646, 13182), (2028, 10699), (2197, 9876), (2469, 8788), (3292, 6591), (4394, 4938)]