21879136

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1087}}^1$

素因数の和:1151

約数の個数: 48

約数和(自身を含む): 46884096

約数和(自身を除く): 25004960

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 68, 74, 136, 148, 272, 296, 544, 592, 629, 1087, 1184, 1258, 2174, 2516, 4348, 5032, 8696, 10064, 17392, 18479, 20128, 34784, 36958, 40219, 73916, 80438, 147832, 160876, 295664, 321752, 591328, 643504, 683723, 1287008, 1367446, 2734892, 5469784, 10939568, 21879136]

約数ペア:

[(1, 21879136), (2, 10939568), (4, 5469784), (8, 2734892), (16, 1367446), (17, 1287008), (32, 683723), (34, 643504), (37, 591328), (68, 321752), (74, 295664), (136, 160876), (148, 147832), (272, 80438), (296, 73916), (544, 40219), (592, 36958), (629, 34784), (1087, 20128), (1184, 18479), (1258, 17392), (2174, 10064), (2516, 8696), (4348, 5032)]