18911488

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2383}}^1$

素因数の和:2430

約数の個数: 36

約数和(自身を含む): 38983168

約数和(自身を除く): 20071680

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2383, 3968, 4766, 7936, 9532, 19064, 38128, 73873, 76256, 147746, 152512, 295492, 305024, 590984, 610048, 1181968, 2363936, 4727872, 9455744, 18911488]

約数ペア:

[(1, 18911488), (2, 9455744), (4, 4727872), (8, 2363936), (16, 1181968), (31, 610048), (32, 590984), (62, 305024), (64, 295492), (124, 152512), (128, 147746), (248, 76256), (256, 73873), (496, 38128), (992, 19064), (1984, 9532), (2383, 7936), (3968, 4766)]