40122880

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{2239}}^1$

素因数の和:2269

約数の個数: 80

約数和(自身を含む): 109992960

約数和(自身を除く): 69870080

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, 1280, 1792, 2239, 2240, 2560, 3584, 4478, 4480, 8956, 8960, 11195, 15673, 17912, 17920, 22390, 31346, 35824, 44780, 62692, 71648, 78365, 89560, 125384, 143296, 156730, 179120, 250768, 286592, 313460, 358240, 501536, 573184, 626920, 716480, 1003072, 1146368, 1253840, 1432960, 2006144, 2507680, 2865920, 4012288, 5015360, 5731840, 8024576, 10030720, 20061440, 40122880]

約数ペア:

[(1, 40122880), (2, 20061440), (4, 10030720), (5, 8024576), (7, 5731840), (8, 5015360), (10, 4012288), (14, 2865920), (16, 2507680), (20, 2006144), (28, 1432960), (32, 1253840), (35, 1146368), (40, 1003072), (56, 716480), (64, 626920), (70, 573184), (80, 501536), (112, 358240), (128, 313460), (140, 286592), (160, 250768), (224, 179120), (256, 156730), (280, 143296), (320, 125384), (448, 89560), (512, 78365), (560, 71648), (640, 62692), (896, 44780), (1120, 35824), (1280, 31346), (1792, 22390), (2239, 17920), (2240, 17912), (2560, 15673), (3584, 11195), (4478, 8960), (4480, 8956)]