21666722

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 41860800

約数和(自身を除く): 20194078

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 101, 154, 199, 202, 398, 539, 707, 1078, 1111, 1393, 1414, 2189, 2222, 2786, 4378, 4949, 7777, 9751, 9898, 15323, 15554, 19502, 20099, 30646, 40198, 54439, 107261, 108878, 140693, 214522, 221089, 281386, 442178, 984851, 1547623, 1969702, 3095246, 10833361, 21666722]

約数ペア:

[(1, 21666722), (2, 10833361), (7, 3095246), (11, 1969702), (14, 1547623), (22, 984851), (49, 442178), (77, 281386), (98, 221089), (101, 214522), (154, 140693), (199, 108878), (202, 107261), (398, 54439), (539, 40198), (707, 30646), (1078, 20099), (1111, 19502), (1393, 15554), (1414, 15323), (2189, 9898), (2222, 9751), (2786, 7777), (4378, 4949)]