257520003

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 387058176

約数和(自身を除く): 129538173

約数列:

[1, 3, 13, 39, 47, 101, 107, 141, 169, 303, 321, 507, 611, 1313, 1391, 1833, 3939, 4173, 4747, 5029, 7943, 10807, 14241, 15087, 17069, 18083, 23829, 32421, 51207, 54249, 61711, 65377, 140491, 185133, 196131, 421473, 507929, 802243, 849901, 1523787, 1826383, 2406729, 2549703, 5479149, 6603077, 19809231, 85840001, 257520003]

約数ペア:

[(1, 257520003), (3, 85840001), (13, 19809231), (39, 6603077), (47, 5479149), (101, 2549703), (107, 2406729), (141, 1826383), (169, 1523787), (303, 849901), (321, 802243), (507, 507929), (611, 421473), (1313, 196131), (1391, 185133), (1833, 140491), (3939, 65377), (4173, 61711), (4747, 54249), (5029, 51207), (7943, 32421), (10807, 23829), (14241, 18083), (15087, 17069)]