155978019

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 246005760

約数和(自身を除く): 90027741

約数列:

[1, 3, 9, 23, 31, 69, 93, 109, 207, 223, 279, 327, 669, 713, 981, 2007, 2139, 2507, 3379, 5129, 6417, 6913, 7521, 10137, 15387, 20739, 22563, 24307, 30411, 46161, 62217, 72921, 77717, 158999, 218763, 233151, 476997, 559061, 699453, 753517, 1430991, 1677183, 2260551, 5031549, 6781653, 17330891, 51992673, 155978019]

約数ペア:

[(1, 155978019), (3, 51992673), (9, 17330891), (23, 6781653), (31, 5031549), (69, 2260551), (93, 1677183), (109, 1430991), (207, 753517), (223, 699453), (279, 559061), (327, 476997), (669, 233151), (713, 218763), (981, 158999), (2007, 77717), (2139, 72921), (2507, 62217), (3379, 46161), (5129, 30411), (6417, 24307), (6913, 22563), (7521, 20739), (10137, 15387)]