155528920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{521}}^1$

素因数の和:988

約数の個数: 64

約数和(自身を含む): 372081600

約数和(自身を除く): 216552680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 439, 521, 680, 878, 1042, 1756, 2084, 2195, 2605, 3512, 4168, 4390, 5210, 7463, 8780, 8857, 10420, 14926, 17560, 17714, 20840, 29852, 35428, 37315, 44285, 59704, 70856, 74630, 88570, 149260, 177140, 228719, 298520, 354280, 457438, 914876, 1143595, 1829752, 2287190, 3888223, 4574380, 7776446, 9148760, 15552892, 19441115, 31105784, 38882230, 77764460, 155528920]

約数ペア:

[(1, 155528920), (2, 77764460), (4, 38882230), (5, 31105784), (8, 19441115), (10, 15552892), (17, 9148760), (20, 7776446), (34, 4574380), (40, 3888223), (68, 2287190), (85, 1829752), (136, 1143595), (170, 914876), (340, 457438), (439, 354280), (521, 298520), (680, 228719), (878, 177140), (1042, 149260), (1756, 88570), (2084, 74630), (2195, 70856), (2605, 59704), (3512, 44285), (4168, 37315), (4390, 35428), (5210, 29852), (7463, 20840), (8780, 17714), (8857, 17560), (10420, 14926)]