19939380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{757}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 56031360

約数和(自身を除く): 36091980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 439, 757, 878, 1317, 1514, 1756, 2195, 2271, 2634, 3028, 3785, 4390, 4542, 5268, 6585, 7570, 8780, 9084, 11355, 13170, 15140, 22710, 26340, 45420, 332323, 664646, 996969, 1329292, 1661615, 1993938, 3323230, 3987876, 4984845, 6646460, 9969690, 19939380]

約数ペア:

[(1, 19939380), (2, 9969690), (3, 6646460), (4, 4984845), (5, 3987876), (6, 3323230), (10, 1993938), (12, 1661615), (15, 1329292), (20, 996969), (30, 664646), (60, 332323), (439, 45420), (757, 26340), (878, 22710), (1317, 15140), (1514, 13170), (1756, 11355), (2195, 9084), (2271, 8780), (2634, 7570), (3028, 6585), (3785, 5268), (4390, 4542)]