20740400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2729}}^1$

素因数の和:2766

約数の個数: 60

約数和(自身を含む): 52470600

約数和(自身を除く): 31730200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2729, 3800, 5458, 7600, 10916, 13645, 21832, 27290, 43664, 51851, 54580, 68225, 103702, 109160, 136450, 207404, 218320, 259255, 272900, 414808, 518510, 545800, 829616, 1037020, 1091600, 1296275, 2074040, 2592550, 4148080, 5185100, 10370200, 20740400]

約数ペア:

[(1, 20740400), (2, 10370200), (4, 5185100), (5, 4148080), (8, 2592550), (10, 2074040), (16, 1296275), (19, 1091600), (20, 1037020), (25, 829616), (38, 545800), (40, 518510), (50, 414808), (76, 272900), (80, 259255), (95, 218320), (100, 207404), (152, 136450), (190, 109160), (200, 103702), (304, 68225), (380, 54580), (400, 51851), (475, 43664), (760, 27290), (950, 21832), (1520, 13645), (1900, 10916), (2729, 7600), (3800, 5458)]