21740180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{743}}^1$

素因数の和:789

約数の個数: 96

約数和(自身を含む): 59996160

約数和(自身を除く): 38255980

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 665, 743, 770, 836, 1045, 1330, 1463, 1486, 1540, 2090, 2660, 2926, 2972, 3715, 4180, 5201, 5852, 7315, 7430, 8173, 10402, 14117, 14630, 14860, 16346, 20804, 26005, 28234, 29260, 32692, 40865, 52010, 56468, 57211, 70585, 81730, 98819, 104020, 114422, 141170, 155287, 163460, 197638, 228844, 282340, 286055, 310574, 395276, 494095, 572110, 621148, 776435, 988190, 1087009, 1144220, 1552870, 1976380, 2174018, 3105740, 4348036, 5435045, 10870090, 21740180]

約数ペア:

[(1, 21740180), (2, 10870090), (4, 5435045), (5, 4348036), (7, 3105740), (10, 2174018), (11, 1976380), (14, 1552870), (19, 1144220), (20, 1087009), (22, 988190), (28, 776435), (35, 621148), (38, 572110), (44, 494095), (55, 395276), (70, 310574), (76, 286055), (77, 282340), (95, 228844), (110, 197638), (133, 163460), (140, 155287), (154, 141170), (190, 114422), (209, 104020), (220, 98819), (266, 81730), (308, 70585), (380, 57211), (385, 56468), (418, 52010), (532, 40865), (665, 32692), (743, 29260), (770, 28234), (836, 26005), (1045, 20804), (1330, 16346), (1463, 14860), (1486, 14630), (1540, 14117), (2090, 10402), (2660, 8173), (2926, 7430), (2972, 7315), (3715, 5852), (4180, 5201)]