19490080

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{673}}^1$

素因数の和:869

約数の個数: 48

約数和(自身を含む): 46368504

約数和(自身を除く): 26878424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 673, 724, 905, 1346, 1448, 1810, 2692, 2896, 3365, 3620, 5384, 5792, 6730, 7240, 10768, 13460, 14480, 21536, 26920, 28960, 53840, 107680, 121813, 243626, 487252, 609065, 974504, 1218130, 1949008, 2436260, 3898016, 4872520, 9745040, 19490080]

約数ペア:

[(1, 19490080), (2, 9745040), (4, 4872520), (5, 3898016), (8, 2436260), (10, 1949008), (16, 1218130), (20, 974504), (32, 609065), (40, 487252), (80, 243626), (160, 121813), (181, 107680), (362, 53840), (673, 28960), (724, 26920), (905, 21536), (1346, 14480), (1448, 13460), (1810, 10768), (2692, 7240), (2896, 6730), (3365, 5792), (3620, 5384)]