19528665

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 36723456

約数和(自身を除く): 17194791

約数列:

[1, 3, 5, 13, 15, 17, 39, 43, 51, 65, 85, 129, 137, 195, 215, 221, 255, 411, 559, 645, 663, 685, 731, 1105, 1677, 1781, 2055, 2193, 2329, 2795, 3315, 3655, 5343, 5891, 6987, 8385, 8905, 9503, 10965, 11645, 17673, 26715, 28509, 29455, 30277, 34935, 47515, 76583, 88365, 90831, 100147, 142545, 151385, 229749, 300441, 382915, 454155, 500735, 1148745, 1301911, 1502205, 3905733, 6509555, 19528665]

約数ペア:

[(1, 19528665), (3, 6509555), (5, 3905733), (13, 1502205), (15, 1301911), (17, 1148745), (39, 500735), (43, 454155), (51, 382915), (65, 300441), (85, 229749), (129, 151385), (137, 142545), (195, 100147), (215, 90831), (221, 88365), (255, 76583), (411, 47515), (559, 34935), (645, 30277), (663, 29455), (685, 28509), (731, 26715), (1105, 17673), (1677, 11645), (1781, 10965), (2055, 9503), (2193, 8905), (2329, 8385), (2795, 6987), (3315, 5891), (3655, 5343)]