21043950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{239}}^1\times {\mathrm{587}}^1$

素因数の和:841

約数の個数: 48

約数和(自身を含む): 52496640

約数和(自身を除く): 31452690

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 239, 478, 587, 717, 1174, 1195, 1434, 1761, 2390, 2935, 3522, 3585, 5870, 5975, 7170, 8805, 11950, 14675, 17610, 17925, 29350, 35850, 44025, 88050, 140293, 280586, 420879, 701465, 841758, 1402930, 2104395, 3507325, 4208790, 7014650, 10521975, 21043950]

約数ペア:

[(1, 21043950), (2, 10521975), (3, 7014650), (5, 4208790), (6, 3507325), (10, 2104395), (15, 1402930), (25, 841758), (30, 701465), (50, 420879), (75, 280586), (150, 140293), (239, 88050), (478, 44025), (587, 35850), (717, 29350), (1174, 17925), (1195, 17610), (1434, 14675), (1761, 11950), (2390, 8805), (2935, 7170), (3522, 5975), (3585, 5870)]