212921505

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1901}}^1$

素因数の和:2062

約数の個数: 48

約数和(自身を含む): 391659840

約数和(自身を除く): 178738335

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 131, 171, 285, 393, 655, 855, 1179, 1901, 1965, 2489, 5703, 5895, 7467, 9505, 12445, 17109, 22401, 28515, 36119, 37335, 85545, 108357, 112005, 180595, 249031, 325071, 541785, 747093, 1245155, 1625355, 2241279, 3735465, 4731589, 11206395, 14194767, 23657945, 42584301, 70973835, 212921505]

約数ペア:

[(1, 212921505), (3, 70973835), (5, 42584301), (9, 23657945), (15, 14194767), (19, 11206395), (45, 4731589), (57, 3735465), (95, 2241279), (131, 1625355), (171, 1245155), (285, 747093), (393, 541785), (655, 325071), (855, 249031), (1179, 180595), (1901, 112005), (1965, 108357), (2489, 85545), (5703, 37335), (5895, 36119), (7467, 28515), (9505, 22401), (12445, 17109)]