21456448

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 112

約数和(自身を含む): 51078384

約数和(自身を除く): 29621936

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 37, 41, 52, 64, 68, 74, 82, 104, 136, 148, 164, 208, 221, 272, 296, 328, 416, 442, 481, 533, 544, 592, 629, 656, 697, 832, 884, 962, 1066, 1088, 1184, 1258, 1312, 1394, 1517, 1768, 1924, 2132, 2368, 2516, 2624, 2788, 3034, 3536, 3848, 4264, 5032, 5576, 6068, 7072, 7696, 8177, 8528, 9061, 10064, 11152, 12136, 14144, 15392, 16354, 17056, 18122, 19721, 20128, 22304, 24272, 25789, 30784, 32708, 34112, 36244, 39442, 40256, 44608, 48544, 51578, 65416, 72488, 78884, 97088, 103156, 130832, 144976, 157768, 206312, 261664, 289952, 315536, 335257, 412624, 523328, 579904, 631072, 670514, 825248, 1262144, 1341028, 1650496, 2682056, 5364112, 10728224, 21456448]

約数ペア:

[(1, 21456448), (2, 10728224), (4, 5364112), (8, 2682056), (13, 1650496), (16, 1341028), (17, 1262144), (26, 825248), (32, 670514), (34, 631072), (37, 579904), (41, 523328), (52, 412624), (64, 335257), (68, 315536), (74, 289952), (82, 261664), (104, 206312), (136, 157768), (148, 144976), (164, 130832), (208, 103156), (221, 97088), (272, 78884), (296, 72488), (328, 65416), (416, 51578), (442, 48544), (481, 44608), (533, 40256), (544, 39442), (592, 36244), (629, 34112), (656, 32708), (697, 30784), (832, 25789), (884, 24272), (962, 22304), (1066, 20128), (1088, 19721), (1184, 18122), (1258, 17056), (1312, 16354), (1394, 15392), (1517, 14144), (1768, 12136), (1924, 11152), (2132, 10064), (2368, 9061), (2516, 8528), (2624, 8177), (2788, 7696), (3034, 7072), (3536, 6068), (3848, 5576), (4264, 5032)]