20407980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2447}}^1$

素因数の和:2598

約数の個数: 48

約数和(自身を含む): 57576960

約数和(自身を除く): 37168980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2447, 2780, 4170, 4894, 7341, 8340, 9788, 12235, 14682, 24470, 29364, 36705, 48940, 73410, 146820, 340133, 680266, 1020399, 1360532, 1700665, 2040798, 3401330, 4081596, 5101995, 6802660, 10203990, 20407980]

約数ペア:

[(1, 20407980), (2, 10203990), (3, 6802660), (4, 5101995), (5, 4081596), (6, 3401330), (10, 2040798), (12, 1700665), (15, 1360532), (20, 1020399), (30, 680266), (60, 340133), (139, 146820), (278, 73410), (417, 48940), (556, 36705), (695, 29364), (834, 24470), (1390, 14682), (1668, 12235), (2085, 9788), (2447, 8340), (2780, 7341), (4170, 4894)]