20691584

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:325

約数の個数: 64

約数和(自身を含む): 45000360

約数和(自身を除く): 24308776

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 64, 68, 74, 128, 136, 148, 257, 272, 296, 514, 544, 592, 629, 1028, 1088, 1184, 1258, 2056, 2176, 2368, 2516, 4112, 4369, 4736, 5032, 8224, 8738, 9509, 10064, 16448, 17476, 19018, 20128, 32896, 34952, 38036, 40256, 69904, 76072, 80512, 139808, 152144, 161653, 279616, 304288, 323306, 559232, 608576, 646612, 1217152, 1293224, 2586448, 5172896, 10345792, 20691584]

約数ペア:

[(1, 20691584), (2, 10345792), (4, 5172896), (8, 2586448), (16, 1293224), (17, 1217152), (32, 646612), (34, 608576), (37, 559232), (64, 323306), (68, 304288), (74, 279616), (128, 161653), (136, 152144), (148, 139808), (257, 80512), (272, 76072), (296, 69904), (514, 40256), (544, 38036), (592, 34952), (629, 32896), (1028, 20128), (1088, 19018), (1184, 17476), (1258, 16448), (2056, 10064), (2176, 9509), (2368, 8738), (2516, 8224), (4112, 5032), (4369, 4736)]