21213472

素因数分解:

$2^5\times 7^2\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:270

約数の個数: 72

約数和(自身を含む): 49469616

約数和(自身を除く): 28256144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 83, 98, 112, 163, 166, 196, 224, 326, 332, 392, 581, 652, 664, 784, 1141, 1162, 1304, 1328, 1568, 2282, 2324, 2608, 2656, 4067, 4564, 4648, 5216, 7987, 8134, 9128, 9296, 13529, 15974, 16268, 18256, 18592, 27058, 31948, 32536, 36512, 54116, 63896, 65072, 94703, 108232, 127792, 130144, 189406, 216464, 255584, 378812, 432928, 662921, 757624, 1325842, 1515248, 2651684, 3030496, 5303368, 10606736, 21213472]

約数ペア:

[(1, 21213472), (2, 10606736), (4, 5303368), (7, 3030496), (8, 2651684), (14, 1515248), (16, 1325842), (28, 757624), (32, 662921), (49, 432928), (56, 378812), (83, 255584), (98, 216464), (112, 189406), (163, 130144), (166, 127792), (196, 108232), (224, 94703), (326, 65072), (332, 63896), (392, 54116), (581, 36512), (652, 32536), (664, 31948), (784, 27058), (1141, 18592), (1162, 18256), (1304, 16268), (1328, 15974), (1568, 13529), (2282, 9296), (2324, 9128), (2608, 8134), (2656, 7987), (4067, 5216), (4564, 4648)]