21987770

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1951}}^1$

素因数の和:1995

約数の個数: 48

約数和(自身を含む): 48066048

約数和(自身を除く): 26078278

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 490, 805, 1127, 1610, 1951, 2254, 3902, 5635, 9755, 11270, 13657, 19510, 27314, 44873, 68285, 89746, 95599, 136570, 191198, 224365, 314111, 448730, 477995, 628222, 955990, 1570555, 2198777, 3141110, 4397554, 10993885, 21987770]

約数ペア:

[(1, 21987770), (2, 10993885), (5, 4397554), (7, 3141110), (10, 2198777), (14, 1570555), (23, 955990), (35, 628222), (46, 477995), (49, 448730), (70, 314111), (98, 224365), (115, 191198), (161, 136570), (230, 95599), (245, 89746), (322, 68285), (490, 44873), (805, 27314), (1127, 19510), (1610, 13657), (1951, 11270), (2254, 9755), (3902, 5635)]