18723328

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:157

約数の個数: 80

約数和(自身を含む): 42106680

約数和(自身を除く): 23383352

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 97, 104, 116, 128, 194, 208, 232, 256, 377, 388, 416, 464, 512, 754, 776, 832, 928, 1261, 1508, 1552, 1664, 1856, 2522, 2813, 3016, 3104, 3328, 3712, 5044, 5626, 6032, 6208, 6656, 7424, 10088, 11252, 12064, 12416, 14848, 20176, 22504, 24128, 24832, 36569, 40352, 45008, 48256, 49664, 73138, 80704, 90016, 96512, 146276, 161408, 180032, 193024, 292552, 322816, 360064, 585104, 645632, 720128, 1170208, 1440256, 2340416, 4680832, 9361664, 18723328]

約数ペア:

[(1, 18723328), (2, 9361664), (4, 4680832), (8, 2340416), (13, 1440256), (16, 1170208), (26, 720128), (29, 645632), (32, 585104), (52, 360064), (58, 322816), (64, 292552), (97, 193024), (104, 180032), (116, 161408), (128, 146276), (194, 96512), (208, 90016), (232, 80704), (256, 73138), (377, 49664), (388, 48256), (416, 45008), (464, 40352), (512, 36569), (754, 24832), (776, 24128), (832, 22504), (928, 20176), (1261, 14848), (1508, 12416), (1552, 12064), (1664, 11252), (1856, 10088), (2522, 7424), (2813, 6656), (3016, 6208), (3104, 6032), (3328, 5626), (3712, 5044)]