21913892

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{421}}^1$

素因数の和:469

約数の個数: 72

約数和(自身を含む): 51895872

約数和(自身を除く): 29981980

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 169, 182, 286, 308, 338, 364, 421, 572, 676, 842, 1001, 1183, 1684, 1859, 2002, 2366, 2947, 3718, 4004, 4631, 4732, 5473, 5894, 7436, 9262, 10946, 11788, 13013, 18524, 21892, 26026, 32417, 38311, 52052, 60203, 64834, 71149, 76622, 120406, 129668, 142298, 153244, 240812, 284596, 421421, 498043, 782639, 842842, 996086, 1565278, 1685684, 1992172, 3130556, 5478473, 10956946, 21913892]

約数ペア:

[(1, 21913892), (2, 10956946), (4, 5478473), (7, 3130556), (11, 1992172), (13, 1685684), (14, 1565278), (22, 996086), (26, 842842), (28, 782639), (44, 498043), (52, 421421), (77, 284596), (91, 240812), (143, 153244), (154, 142298), (169, 129668), (182, 120406), (286, 76622), (308, 71149), (338, 64834), (364, 60203), (421, 52052), (572, 38311), (676, 32417), (842, 26026), (1001, 21892), (1183, 18524), (1684, 13013), (1859, 11788), (2002, 10946), (2366, 9262), (2947, 7436), (3718, 5894), (4004, 5473), (4631, 4732)]