165740920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{557}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 384484320

約数和(自身を除く): 218743400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 173, 215, 344, 346, 430, 557, 692, 860, 865, 1114, 1384, 1720, 1730, 2228, 2785, 3460, 4456, 5570, 6920, 7439, 11140, 14878, 22280, 23951, 29756, 37195, 47902, 59512, 74390, 95804, 96361, 119755, 148780, 191608, 192722, 239510, 297560, 385444, 479020, 481805, 770888, 958040, 963610, 1927220, 3854440, 4143523, 8287046, 16574092, 20717615, 33148184, 41435230, 82870460, 165740920]

約数ペア:

[(1, 165740920), (2, 82870460), (4, 41435230), (5, 33148184), (8, 20717615), (10, 16574092), (20, 8287046), (40, 4143523), (43, 3854440), (86, 1927220), (172, 963610), (173, 958040), (215, 770888), (344, 481805), (346, 479020), (430, 385444), (557, 297560), (692, 239510), (860, 192722), (865, 191608), (1114, 148780), (1384, 119755), (1720, 96361), (1730, 95804), (2228, 74390), (2785, 59512), (3460, 47902), (4456, 37195), (5570, 29756), (6920, 23951), (7439, 22280), (11140, 14878)]