20015744

素因数分解:

$2^7\times 7^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 46267200

約数和(自身を除く): 26251456

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 89, 112, 128, 178, 224, 251, 356, 448, 502, 623, 712, 896, 1004, 1246, 1424, 1757, 2008, 2492, 2848, 3514, 4016, 4984, 5696, 7028, 8032, 9968, 11392, 14056, 16064, 19936, 22339, 28112, 32128, 39872, 44678, 56224, 79744, 89356, 112448, 156373, 178712, 224896, 312746, 357424, 625492, 714848, 1250984, 1429696, 2501968, 2859392, 5003936, 10007872, 20015744]

約数ペア:

[(1, 20015744), (2, 10007872), (4, 5003936), (7, 2859392), (8, 2501968), (14, 1429696), (16, 1250984), (28, 714848), (32, 625492), (56, 357424), (64, 312746), (89, 224896), (112, 178712), (128, 156373), (178, 112448), (224, 89356), (251, 79744), (356, 56224), (448, 44678), (502, 39872), (623, 32128), (712, 28112), (896, 22339), (1004, 19936), (1246, 16064), (1424, 14056), (1757, 11392), (2008, 9968), (2492, 8032), (2848, 7028), (3514, 5696), (4016, 4984)]