20105729504

素因数分解:

$2^5\times 7^1\times {\mathrm{139}}^1\times {\mathrm{645739}}^1$

素因数の和:645895

約数の個数: 48

約数和(自身を含む): 45563414400

約数和(自身を除く): 25457684896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 139, 224, 278, 556, 973, 1112, 1946, 2224, 3892, 4448, 7784, 15568, 31136, 645739, 1291478, 2582956, 4520173, 5165912, 9040346, 10331824, 18080692, 20663648, 36161384, 72322768, 89757721, 144645536, 179515442, 359030884, 628304047, 718061768, 1256608094, 1436123536, 2513216188, 2872247072, 5026432376, 10052864752, 20105729504]

約数ペア:

[(1, 20105729504), (2, 10052864752), (4, 5026432376), (7, 2872247072), (8, 2513216188), (14, 1436123536), (16, 1256608094), (28, 718061768), (32, 628304047), (56, 359030884), (112, 179515442), (139, 144645536), (224, 89757721), (278, 72322768), (556, 36161384), (973, 20663648), (1112, 18080692), (1946, 10331824), (2224, 9040346), (3892, 5165912), (4448, 4520173), (7784, 2582956), (15568, 1291478), (31136, 645739)]