85287440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{21757}}^1$

素因数の和:21784

約数の個数: 60

約数和(自身を含む): 230678316

約数和(自身を除く): 145390876

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 21757, 43514, 87028, 108785, 152299, 174056, 217570, 304598, 348112, 435140, 609196, 761495, 870280, 1066093, 1218392, 1522990, 1740560, 2132186, 2436784, 3045980, 4264372, 5330465, 6091960, 8528744, 10660930, 12183920, 17057488, 21321860, 42643720, 85287440]

約数ペア:

[(1, 85287440), (2, 42643720), (4, 21321860), (5, 17057488), (7, 12183920), (8, 10660930), (10, 8528744), (14, 6091960), (16, 5330465), (20, 4264372), (28, 3045980), (35, 2436784), (40, 2132186), (49, 1740560), (56, 1522990), (70, 1218392), (80, 1066093), (98, 870280), (112, 761495), (140, 609196), (196, 435140), (245, 348112), (280, 304598), (392, 217570), (490, 174056), (560, 152299), (784, 108785), (980, 87028), (1960, 43514), (3920, 21757)]