25521993

素因数分解:

$3^3\times 7^2\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 44651520

約数和(自身を除く): 19129527

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 101, 147, 189, 191, 303, 441, 573, 707, 909, 1323, 1337, 1719, 2121, 2727, 4011, 4949, 5157, 6363, 9359, 12033, 14847, 19089, 19291, 28077, 36099, 44541, 57873, 84231, 133623, 135037, 173619, 252693, 405111, 520857, 945259, 1215333, 2835777, 3645999, 8507331, 25521993]

約数ペア:

[(1, 25521993), (3, 8507331), (7, 3645999), (9, 2835777), (21, 1215333), (27, 945259), (49, 520857), (63, 405111), (101, 252693), (147, 173619), (189, 135037), (191, 133623), (303, 84231), (441, 57873), (573, 44541), (707, 36099), (909, 28077), (1323, 19291), (1337, 19089), (1719, 14847), (2121, 12033), (2727, 9359), (4011, 6363), (4949, 5157)]