199865710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:409

約数の個数: 64

約数和(自身を含む): 402983424

約数和(自身を除く): 203117714

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 157, 163, 314, 326, 355, 710, 781, 785, 815, 1562, 1570, 1630, 1727, 1793, 3454, 3586, 3905, 7810, 8635, 8965, 11147, 11573, 17270, 17930, 22294, 23146, 25591, 51182, 55735, 57865, 111470, 115730, 122617, 127303, 127955, 245234, 254606, 255910, 281501, 563002, 613085, 636515, 1226170, 1273030, 1407505, 1816961, 2815010, 3633922, 9084805, 18169610, 19986571, 39973142, 99932855, 199865710]

約数ペア:

[(1, 199865710), (2, 99932855), (5, 39973142), (10, 19986571), (11, 18169610), (22, 9084805), (55, 3633922), (71, 2815010), (110, 1816961), (142, 1407505), (157, 1273030), (163, 1226170), (314, 636515), (326, 613085), (355, 563002), (710, 281501), (781, 255910), (785, 254606), (815, 245234), (1562, 127955), (1570, 127303), (1630, 122617), (1727, 115730), (1793, 111470), (3454, 57865), (3586, 55735), (3905, 51182), (7810, 25591), (8635, 23146), (8965, 22294), (11147, 17930), (11573, 17270)]