21784910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1933}}^1$

素因数の和:1977

約数の個数: 48

約数和(自身を含む): 47622816

約数和(自身を除く): 25837906

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 490, 805, 1127, 1610, 1933, 2254, 3866, 5635, 9665, 11270, 13531, 19330, 27062, 44459, 67655, 88918, 94717, 135310, 189434, 222295, 311213, 444590, 473585, 622426, 947170, 1556065, 2178491, 3112130, 4356982, 10892455, 21784910]

約数ペア:

[(1, 21784910), (2, 10892455), (5, 4356982), (7, 3112130), (10, 2178491), (14, 1556065), (23, 947170), (35, 622426), (46, 473585), (49, 444590), (70, 311213), (98, 222295), (115, 189434), (161, 135310), (230, 94717), (245, 88918), (322, 67655), (490, 44459), (805, 27062), (1127, 19330), (1610, 13531), (1933, 11270), (2254, 9665), (3866, 5635)]