21287552

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1163}}^1$

素因数の和:1201

約数の個数: 64

約数和(自身を含む): 49865760

約数和(自身を除く): 28578208

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 52, 64, 88, 104, 128, 143, 176, 208, 286, 352, 416, 572, 704, 832, 1144, 1163, 1408, 1664, 2288, 2326, 4576, 4652, 9152, 9304, 12793, 15119, 18304, 18608, 25586, 30238, 37216, 51172, 60476, 74432, 102344, 120952, 148864, 166309, 204688, 241904, 332618, 409376, 483808, 665236, 818752, 967616, 1330472, 1637504, 1935232, 2660944, 5321888, 10643776, 21287552]

約数ペア:

[(1, 21287552), (2, 10643776), (4, 5321888), (8, 2660944), (11, 1935232), (13, 1637504), (16, 1330472), (22, 967616), (26, 818752), (32, 665236), (44, 483808), (52, 409376), (64, 332618), (88, 241904), (104, 204688), (128, 166309), (143, 148864), (176, 120952), (208, 102344), (286, 74432), (352, 60476), (416, 51172), (572, 37216), (704, 30238), (832, 25586), (1144, 18608), (1163, 18304), (1408, 15119), (1664, 12793), (2288, 9304), (2326, 9152), (4576, 4652)]