21000831996

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1\times {\mathrm{76781}}^1$

素因数の和:77802

約数の個数: 48

約数和(自身を含む): 51184723968

約数和(自身を除く): 30183891972

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 276, 991, 1982, 2973, 3964, 5946, 11892, 22793, 45586, 68379, 76781, 91172, 136758, 153562, 230343, 273516, 307124, 460686, 921372, 1765963, 3531926, 5297889, 7063852, 10595778, 21191556, 76089971, 152179942, 228269913, 304359884, 456539826, 913079652, 1750069333, 3500138666, 5250207999, 7000277332, 10500415998, 21000831996]

約数ペア:

[(1, 21000831996), (2, 10500415998), (3, 7000277332), (4, 5250207999), (6, 3500138666), (12, 1750069333), (23, 913079652), (46, 456539826), (69, 304359884), (92, 228269913), (138, 152179942), (276, 76089971), (991, 21191556), (1982, 10595778), (2973, 7063852), (3964, 5297889), (5946, 3531926), (11892, 1765963), (22793, 921372), (45586, 460686), (68379, 307124), (76781, 273516), (91172, 230343), (136758, 153562)]