81709040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2753}}^1$

素因数の和:2826

約数の個数: 80

約数和(自身を含む): 221289408

約数和(自身を除く): 139580368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 53, 56, 70, 80, 106, 112, 140, 212, 265, 280, 371, 424, 530, 560, 742, 848, 1060, 1484, 1855, 2120, 2753, 2968, 3710, 4240, 5506, 5936, 7420, 11012, 13765, 14840, 19271, 22024, 27530, 29680, 38542, 44048, 55060, 77084, 96355, 110120, 145909, 154168, 192710, 220240, 291818, 308336, 385420, 583636, 729545, 770840, 1021363, 1167272, 1459090, 1541680, 2042726, 2334544, 2918180, 4085452, 5106815, 5836360, 8170904, 10213630, 11672720, 16341808, 20427260, 40854520, 81709040]

約数ペア:

[(1, 81709040), (2, 40854520), (4, 20427260), (5, 16341808), (7, 11672720), (8, 10213630), (10, 8170904), (14, 5836360), (16, 5106815), (20, 4085452), (28, 2918180), (35, 2334544), (40, 2042726), (53, 1541680), (56, 1459090), (70, 1167272), (80, 1021363), (106, 770840), (112, 729545), (140, 583636), (212, 385420), (265, 308336), (280, 291818), (371, 220240), (424, 192710), (530, 154168), (560, 145909), (742, 110120), (848, 96355), (1060, 77084), (1484, 55060), (1855, 44048), (2120, 38542), (2753, 29680), (2968, 27530), (3710, 22024), (4240, 19271), (5506, 14840), (5936, 13765), (7420, 11012)]