21425312

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 44906400

約数和(自身を除く): 23481088

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 131, 152, 262, 269, 304, 524, 538, 608, 1048, 1076, 2096, 2152, 2489, 4192, 4304, 4978, 5111, 8608, 9956, 10222, 19912, 20444, 35239, 39824, 40888, 70478, 79648, 81776, 140956, 163552, 281912, 563824, 669541, 1127648, 1339082, 2678164, 5356328, 10712656, 21425312]

約数ペア:

[(1, 21425312), (2, 10712656), (4, 5356328), (8, 2678164), (16, 1339082), (19, 1127648), (32, 669541), (38, 563824), (76, 281912), (131, 163552), (152, 140956), (262, 81776), (269, 79648), (304, 70478), (524, 40888), (538, 39824), (608, 35239), (1048, 20444), (1076, 19912), (2096, 10222), (2152, 9956), (2489, 8608), (4192, 5111), (4304, 4978)]