28011627

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 48514752

約数和(自身を除く): 20503125

約数列:

[1, 3, 7, 9, 21, 37, 61, 63, 111, 183, 197, 259, 333, 427, 549, 591, 777, 1281, 1379, 1773, 2257, 2331, 3843, 4137, 6771, 7289, 12017, 12411, 15799, 20313, 21867, 36051, 47397, 51023, 65601, 84119, 108153, 142191, 153069, 252357, 444629, 459207, 757071, 1333887, 3112403, 4001661, 9337209, 28011627]

約数ペア:

[(1, 28011627), (3, 9337209), (7, 4001661), (9, 3112403), (21, 1333887), (37, 757071), (61, 459207), (63, 444629), (111, 252357), (183, 153069), (197, 142191), (259, 108153), (333, 84119), (427, 65601), (549, 51023), (591, 47397), (777, 36051), (1281, 21867), (1379, 20313), (1773, 15799), (2257, 12411), (2331, 12017), (3843, 7289), (4137, 6771)]