19551520

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1373}}^1$

素因数の和:1477

約数の個数: 48

約数和(自身を含む): 46743480

約数和(自身を除く): 27191960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1373, 1424, 1780, 2746, 2848, 3560, 5492, 6865, 7120, 10984, 13730, 14240, 21968, 27460, 43936, 54920, 109840, 122197, 219680, 244394, 488788, 610985, 977576, 1221970, 1955152, 2443940, 3910304, 4887880, 9775760, 19551520]

約数ペア:

[(1, 19551520), (2, 9775760), (4, 4887880), (5, 3910304), (8, 2443940), (10, 1955152), (16, 1221970), (20, 977576), (32, 610985), (40, 488788), (80, 244394), (89, 219680), (160, 122197), (178, 109840), (356, 54920), (445, 43936), (712, 27460), (890, 21968), (1373, 14240), (1424, 13730), (1780, 10984), (2746, 7120), (2848, 6865), (3560, 5492)]