18940140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{757}}^1$

素因数の和:911

約数の個数: 72

約数和(自身を含む): 57941520

約数和(自身を除く): 39001380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 757, 834, 1251, 1390, 1514, 1668, 2085, 2271, 2502, 2780, 3028, 3785, 4170, 4542, 5004, 6255, 6813, 7570, 8340, 9084, 11355, 12510, 13626, 15140, 22710, 25020, 27252, 34065, 45420, 68130, 105223, 136260, 210446, 315669, 420892, 526115, 631338, 947007, 1052230, 1262676, 1578345, 1894014, 2104460, 3156690, 3788028, 4735035, 6313380, 9470070, 18940140]

約数ペア:

[(1, 18940140), (2, 9470070), (3, 6313380), (4, 4735035), (5, 3788028), (6, 3156690), (9, 2104460), (10, 1894014), (12, 1578345), (15, 1262676), (18, 1052230), (20, 947007), (30, 631338), (36, 526115), (45, 420892), (60, 315669), (90, 210446), (139, 136260), (180, 105223), (278, 68130), (417, 45420), (556, 34065), (695, 27252), (757, 25020), (834, 22710), (1251, 15140), (1390, 13626), (1514, 12510), (1668, 11355), (2085, 9084), (2271, 8340), (2502, 7570), (2780, 6813), (3028, 6255), (3785, 5004), (4170, 4542)]