28078561

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 36034560

約数和(自身を除く): 7955999

約数列:

[1, 7, 19, 23, 67, 133, 137, 161, 437, 469, 959, 1273, 1541, 2603, 3059, 3151, 8911, 9179, 10787, 18221, 22057, 29279, 59869, 64253, 174401, 204953, 211117, 419083, 1220807, 1477819, 4011223, 28078561]

約数ペア:

[(1, 28078561), (7, 4011223), (19, 1477819), (23, 1220807), (67, 419083), (133, 211117), (137, 204953), (161, 174401), (437, 64253), (469, 59869), (959, 29279), (1273, 22057), (1541, 18221), (2603, 10787), (3059, 9179), (3151, 8911)]