199487820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{67853}}^1$

素因数の和:67879

約数の個数: 72

約数和(自身を含む): 649769904

約数和(自身を除く): 450282084

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 67853, 135706, 203559, 271412, 339265, 407118, 474971, 678530, 814236, 949942, 1017795, 1357060, 1424913, 1899884, 2035590, 2374855, 2849826, 3324797, 4071180, 4749710, 5699652, 6649594, 7124565, 9499420, 9974391, 13299188, 14249130, 16623985, 19948782, 28498260, 33247970, 39897564, 49871955, 66495940, 99743910, 199487820]

約数ペア:

[(1, 199487820), (2, 99743910), (3, 66495940), (4, 49871955), (5, 39897564), (6, 33247970), (7, 28498260), (10, 19948782), (12, 16623985), (14, 14249130), (15, 13299188), (20, 9974391), (21, 9499420), (28, 7124565), (30, 6649594), (35, 5699652), (42, 4749710), (49, 4071180), (60, 3324797), (70, 2849826), (84, 2374855), (98, 2035590), (105, 1899884), (140, 1424913), (147, 1357060), (196, 1017795), (210, 949942), (245, 814236), (294, 678530), (420, 474971), (490, 407118), (588, 339265), (735, 271412), (980, 203559), (1470, 135706), (2940, 67853)]