21179172

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 58094400

約数和(自身を除く): 36915228

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 181, 196, 199, 294, 362, 398, 543, 588, 597, 724, 796, 1086, 1194, 1267, 1393, 2172, 2388, 2534, 2786, 3801, 4179, 5068, 5572, 7602, 8358, 8869, 9751, 15204, 16716, 17738, 19502, 26607, 29253, 35476, 36019, 39004, 53214, 58506, 72038, 106428, 108057, 117012, 144076, 216114, 252133, 432228, 504266, 756399, 1008532, 1512798, 1764931, 3025596, 3529862, 5294793, 7059724, 10589586, 21179172]

約数ペア:

[(1, 21179172), (2, 10589586), (3, 7059724), (4, 5294793), (6, 3529862), (7, 3025596), (12, 1764931), (14, 1512798), (21, 1008532), (28, 756399), (42, 504266), (49, 432228), (84, 252133), (98, 216114), (147, 144076), (181, 117012), (196, 108057), (199, 106428), (294, 72038), (362, 58506), (398, 53214), (543, 39004), (588, 36019), (597, 35476), (724, 29253), (796, 26607), (1086, 19502), (1194, 17738), (1267, 16716), (1393, 15204), (2172, 9751), (2388, 8869), (2534, 8358), (2786, 7602), (3801, 5572), (4179, 5068)]