20661760

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1153}}^1$

素因数の和:1183

約数の個数: 80

約数和(自身を含む): 56666016

約数和(自身を除く): 36004256

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1153, 1280, 1792, 2240, 2306, 2560, 3584, 4480, 4612, 5765, 8071, 8960, 9224, 11530, 16142, 17920, 18448, 23060, 32284, 36896, 40355, 46120, 64568, 73792, 80710, 92240, 129136, 147584, 161420, 184480, 258272, 295168, 322840, 368960, 516544, 590336, 645680, 737920, 1033088, 1291360, 1475840, 2066176, 2582720, 2951680, 4132352, 5165440, 10330880, 20661760]

約数ペア:

[(1, 20661760), (2, 10330880), (4, 5165440), (5, 4132352), (7, 2951680), (8, 2582720), (10, 2066176), (14, 1475840), (16, 1291360), (20, 1033088), (28, 737920), (32, 645680), (35, 590336), (40, 516544), (56, 368960), (64, 322840), (70, 295168), (80, 258272), (112, 184480), (128, 161420), (140, 147584), (160, 129136), (224, 92240), (256, 80710), (280, 73792), (320, 64568), (448, 46120), (512, 40355), (560, 36896), (640, 32284), (896, 23060), (1120, 18448), (1153, 17920), (1280, 16142), (1792, 11530), (2240, 9224), (2306, 8960), (2560, 8071), (3584, 5765), (4480, 4612)]