21304416

素因数分解:

$2^5\times 3^1\times 7^3\times {\mathrm{647}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 44013984

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 49, 56, 84, 96, 98, 112, 147, 168, 196, 224, 294, 336, 343, 392, 588, 647, 672, 686, 784, 1029, 1176, 1294, 1372, 1568, 1941, 2058, 2352, 2588, 2744, 3882, 4116, 4529, 4704, 5176, 5488, 7764, 8232, 9058, 10352, 10976, 13587, 15528, 16464, 18116, 20704, 27174, 31056, 31703, 32928, 36232, 54348, 62112, 63406, 72464, 95109, 108696, 126812, 144928, 190218, 217392, 221921, 253624, 380436, 434784, 443842, 507248, 665763, 760872, 887684, 1014496, 1331526, 1521744, 1775368, 2663052, 3043488, 3550736, 5326104, 7101472, 10652208, 21304416]

約数ペア:

[(1, 21304416), (2, 10652208), (3, 7101472), (4, 5326104), (6, 3550736), (7, 3043488), (8, 2663052), (12, 1775368), (14, 1521744), (16, 1331526), (21, 1014496), (24, 887684), (28, 760872), (32, 665763), (42, 507248), (48, 443842), (49, 434784), (56, 380436), (84, 253624), (96, 221921), (98, 217392), (112, 190218), (147, 144928), (168, 126812), (196, 108696), (224, 95109), (294, 72464), (336, 63406), (343, 62112), (392, 54348), (588, 36232), (647, 32928), (672, 31703), (686, 31056), (784, 27174), (1029, 20704), (1176, 18116), (1294, 16464), (1372, 15528), (1568, 13587), (1941, 10976), (2058, 10352), (2352, 9058), (2588, 8232), (2744, 7764), (3882, 5488), (4116, 5176), (4529, 4704)]