18515133

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 34714368

約数和(自身を除く): 16199235

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 47, 63, 91, 111, 117, 141, 169, 259, 273, 329, 333, 423, 481, 507, 611, 777, 819, 987, 1183, 1443, 1521, 1739, 1833, 2331, 2961, 3367, 3549, 4277, 4329, 5217, 5499, 6253, 7943, 10101, 10647, 12173, 12831, 15651, 18759, 22607, 23829, 30303, 36519, 38493, 43771, 55601, 56277, 67821, 71487, 109557, 131313, 158249, 166803, 203463, 293891, 393939, 474747, 500409, 881673, 1424241, 2057237, 2645019, 6171711, 18515133]

約数ペア:

[(1, 18515133), (3, 6171711), (7, 2645019), (9, 2057237), (13, 1424241), (21, 881673), (37, 500409), (39, 474747), (47, 393939), (63, 293891), (91, 203463), (111, 166803), (117, 158249), (141, 131313), (169, 109557), (259, 71487), (273, 67821), (329, 56277), (333, 55601), (423, 43771), (481, 38493), (507, 36519), (611, 30303), (777, 23829), (819, 22607), (987, 18759), (1183, 15651), (1443, 12831), (1521, 12173), (1739, 10647), (1833, 10101), (2331, 7943), (2961, 6253), (3367, 5499), (3549, 5217), (4277, 4329)]