21217404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3163}}^1$

素因数の和:3226

約数の個数: 48

約数和(自身を含む): 54572672

約数和(自身を除く): 33355268

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3163, 3354, 6326, 6708, 9489, 12652, 18978, 37956, 41119, 82238, 123357, 136009, 164476, 246714, 272018, 408027, 493428, 544036, 816054, 1632108, 1768117, 3536234, 5304351, 7072468, 10608702, 21217404]

約数ペア:

[(1, 21217404), (2, 10608702), (3, 7072468), (4, 5304351), (6, 3536234), (12, 1768117), (13, 1632108), (26, 816054), (39, 544036), (43, 493428), (52, 408027), (78, 272018), (86, 246714), (129, 164476), (156, 136009), (172, 123357), (258, 82238), (516, 41119), (559, 37956), (1118, 18978), (1677, 12652), (2236, 9489), (3163, 6708), (3354, 6326)]