19974640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{673}}^1$

素因数の和:746

約数の個数: 80

約数和(自身を含む): 54157248

約数和(自身を除く): 34182608

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, 673, 742, 848, 1060, 1346, 1484, 1855, 2120, 2692, 2968, 3365, 3710, 4240, 4711, 5384, 5936, 6730, 7420, 9422, 10768, 13460, 14840, 18844, 23555, 26920, 29680, 35669, 37688, 47110, 53840, 71338, 75376, 94220, 142676, 178345, 188440, 249683, 285352, 356690, 376880, 499366, 570704, 713380, 998732, 1248415, 1426760, 1997464, 2496830, 2853520, 3994928, 4993660, 9987320, 19974640]

約数ペア:

[(1, 19974640), (2, 9987320), (4, 4993660), (5, 3994928), (7, 2853520), (8, 2496830), (10, 1997464), (14, 1426760), (16, 1248415), (20, 998732), (28, 713380), (35, 570704), (40, 499366), (53, 376880), (56, 356690), (70, 285352), (80, 249683), (106, 188440), (112, 178345), (140, 142676), (212, 94220), (265, 75376), (280, 71338), (371, 53840), (424, 47110), (530, 37688), (560, 35669), (673, 29680), (742, 26920), (848, 23555), (1060, 18844), (1346, 14840), (1484, 13460), (1855, 10768), (2120, 9422), (2692, 7420), (2968, 6730), (3365, 5936), (3710, 5384), (4240, 4711)]