19518976

素因数分解:

$2^9\times {\mathrm{67}}^1\times {\mathrm{569}}^1$

素因数の和:654

約数の個数: 40

約数和(自身を含む): 39651480

約数和(自身を除く): 20132504

約数列:

[1, 2, 4, 8, 16, 32, 64, 67, 128, 134, 256, 268, 512, 536, 569, 1072, 1138, 2144, 2276, 4288, 4552, 8576, 9104, 17152, 18208, 34304, 36416, 38123, 72832, 76246, 145664, 152492, 291328, 304984, 609968, 1219936, 2439872, 4879744, 9759488, 19518976]

約数ペア:

[(1, 19518976), (2, 9759488), (4, 4879744), (8, 2439872), (16, 1219936), (32, 609968), (64, 304984), (67, 291328), (128, 152492), (134, 145664), (256, 76246), (268, 72832), (512, 38123), (536, 36416), (569, 34304), (1072, 18208), (1138, 17152), (2144, 9104), (2276, 8576), (4288, 4552)]