19990528

素因数分解:

$2^{11}\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 41081040

約数和(自身を除く): 21090512

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 227, 256, 344, 454, 512, 688, 908, 1024, 1376, 1816, 2048, 2752, 3632, 5504, 7264, 9761, 11008, 14528, 19522, 22016, 29056, 39044, 44032, 58112, 78088, 88064, 116224, 156176, 232448, 312352, 464896, 624704, 1249408, 2498816, 4997632, 9995264, 19990528]

約数ペア:

[(1, 19990528), (2, 9995264), (4, 4997632), (8, 2498816), (16, 1249408), (32, 624704), (43, 464896), (64, 312352), (86, 232448), (128, 156176), (172, 116224), (227, 88064), (256, 78088), (344, 58112), (454, 44032), (512, 39044), (688, 29056), (908, 22016), (1024, 19522), (1376, 14528), (1816, 11008), (2048, 9761), (2752, 7264), (3632, 5504)]