21661312

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 45826560

約数和(自身を除く): 24165248

約数列:

[1, 2, 4, 8, 16, 31, 32, 53, 62, 64, 103, 106, 124, 128, 206, 212, 248, 412, 424, 496, 824, 848, 992, 1643, 1648, 1696, 1984, 3193, 3286, 3296, 3392, 3968, 5459, 6386, 6572, 6592, 6784, 10918, 12772, 13144, 13184, 21836, 25544, 26288, 43672, 51088, 52576, 87344, 102176, 105152, 169229, 174688, 204352, 210304, 338458, 349376, 408704, 676916, 698752, 1353832, 2707664, 5415328, 10830656, 21661312]

約数ペア:

[(1, 21661312), (2, 10830656), (4, 5415328), (8, 2707664), (16, 1353832), (31, 698752), (32, 676916), (53, 408704), (62, 349376), (64, 338458), (103, 210304), (106, 204352), (124, 174688), (128, 169229), (206, 105152), (212, 102176), (248, 87344), (412, 52576), (424, 51088), (496, 43672), (824, 26288), (848, 25544), (992, 21836), (1643, 13184), (1648, 13144), (1696, 12772), (1984, 10918), (3193, 6784), (3286, 6592), (3296, 6572), (3392, 6386), (3968, 5459)]