21419264

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2699}}^1$

素因数の和:2746

約数の個数: 36

約数和(自身を含む): 44150400

約数和(自身を除く): 22731136

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2699, 3968, 5398, 7936, 10796, 21592, 43184, 83669, 86368, 167338, 172736, 334676, 345472, 669352, 690944, 1338704, 2677408, 5354816, 10709632, 21419264]

約数ペア:

[(1, 21419264), (2, 10709632), (4, 5354816), (8, 2677408), (16, 1338704), (31, 690944), (32, 669352), (62, 345472), (64, 334676), (124, 172736), (128, 167338), (248, 86368), (256, 83669), (496, 43184), (992, 21592), (1984, 10796), (2699, 7936), (3968, 5398)]