28457728

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{503}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 64901088

約数和(自身を除く): 36443360

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 256, 272, 416, 442, 503, 544, 832, 884, 1006, 1088, 1664, 1768, 2012, 2176, 3328, 3536, 4024, 4352, 6539, 7072, 8048, 8551, 13078, 14144, 16096, 17102, 26156, 28288, 32192, 34204, 52312, 56576, 64384, 68408, 104624, 111163, 128768, 136816, 209248, 222326, 273632, 418496, 444652, 547264, 836992, 889304, 1094528, 1673984, 1778608, 2189056, 3557216, 7114432, 14228864, 28457728]

約数ペア:

[(1, 28457728), (2, 14228864), (4, 7114432), (8, 3557216), (13, 2189056), (16, 1778608), (17, 1673984), (26, 1094528), (32, 889304), (34, 836992), (52, 547264), (64, 444652), (68, 418496), (104, 273632), (128, 222326), (136, 209248), (208, 136816), (221, 128768), (256, 111163), (272, 104624), (416, 68408), (442, 64384), (503, 56576), (544, 52312), (832, 34204), (884, 32192), (1006, 28288), (1088, 26156), (1664, 17102), (1768, 16096), (2012, 14144), (2176, 13078), (3328, 8551), (3536, 8048), (4024, 7072), (4352, 6539)]