21078016

素因数分解:

$2^{13}\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 56

約数和(自身を含む): 44037504

約数和(自身を除く): 22959488

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 83, 124, 128, 166, 248, 256, 332, 496, 512, 664, 992, 1024, 1328, 1984, 2048, 2573, 2656, 3968, 4096, 5146, 5312, 7936, 8192, 10292, 10624, 15872, 20584, 21248, 31744, 41168, 42496, 63488, 82336, 84992, 126976, 164672, 169984, 253952, 329344, 339968, 658688, 679936, 1317376, 2634752, 5269504, 10539008, 21078016]

約数ペア:

[(1, 21078016), (2, 10539008), (4, 5269504), (8, 2634752), (16, 1317376), (31, 679936), (32, 658688), (62, 339968), (64, 329344), (83, 253952), (124, 169984), (128, 164672), (166, 126976), (248, 84992), (256, 82336), (332, 63488), (496, 42496), (512, 41168), (664, 31744), (992, 21248), (1024, 20584), (1328, 15872), (1984, 10624), (2048, 10292), (2573, 8192), (2656, 7936), (3968, 5312), (4096, 5146)]