21930237

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 40550400

約数和(自身を除く): 18620163

約数列:

[1, 3, 7, 9, 19, 21, 27, 31, 57, 63, 93, 133, 171, 189, 197, 217, 279, 399, 513, 589, 591, 651, 837, 1197, 1379, 1767, 1773, 1953, 3591, 3743, 4123, 4137, 5301, 5319, 5859, 6107, 11229, 12369, 12411, 15903, 18321, 26201, 33687, 37107, 37233, 42749, 54963, 78603, 101061, 111321, 116033, 128247, 164889, 235809, 348099, 384741, 707427, 812231, 1044297, 1154223, 2436693, 3132891, 7310079, 21930237]

約数ペア:

[(1, 21930237), (3, 7310079), (7, 3132891), (9, 2436693), (19, 1154223), (21, 1044297), (27, 812231), (31, 707427), (57, 384741), (63, 348099), (93, 235809), (133, 164889), (171, 128247), (189, 116033), (197, 111321), (217, 101061), (279, 78603), (399, 54963), (513, 42749), (589, 37233), (591, 37107), (651, 33687), (837, 26201), (1197, 18321), (1379, 15903), (1767, 12411), (1773, 12369), (1953, 11229), (3591, 6107), (3743, 5859), (4123, 5319), (4137, 5301)]