21552685

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 35458560

約数和(自身を除く): 13905875

約数列:

[1, 5, 7, 11, 17, 35, 37, 55, 77, 85, 89, 119, 185, 187, 259, 385, 407, 445, 595, 623, 629, 935, 979, 1295, 1309, 1513, 2035, 2849, 3115, 3145, 3293, 4403, 4895, 6545, 6853, 6919, 7565, 10591, 14245, 16465, 16643, 22015, 23051, 34265, 34595, 36223, 48433, 52955, 55981, 83215, 115255, 116501, 181115, 242165, 253561, 279905, 391867, 582505, 615791, 1267805, 1959335, 3078955, 4310537, 21552685]

約数ペア:

[(1, 21552685), (5, 4310537), (7, 3078955), (11, 1959335), (17, 1267805), (35, 615791), (37, 582505), (55, 391867), (77, 279905), (85, 253561), (89, 242165), (119, 181115), (185, 116501), (187, 115255), (259, 83215), (385, 55981), (407, 52955), (445, 48433), (595, 36223), (623, 34595), (629, 34265), (935, 23051), (979, 22015), (1295, 16643), (1309, 16465), (1513, 14245), (2035, 10591), (2849, 7565), (3115, 6919), (3145, 6853), (3293, 6545), (4403, 4895)]