20199789775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{167}}^1\times {\mathrm{523}}^1$

素因数の和:769

約数の個数: 72

約数和(自身を含む): 28523424384

約数和(自身を除く): 8323634609

約数列:

[1, 5, 11, 25, 29, 55, 145, 167, 275, 319, 523, 725, 835, 841, 1595, 1837, 2615, 4175, 4205, 4843, 5753, 7975, 9185, 9251, 13075, 15167, 21025, 24215, 28765, 45925, 46255, 53273, 75835, 87341, 121075, 140447, 143825, 166837, 231275, 266365, 379175, 436705, 439843, 702235, 834185, 960751, 1331825, 1544917, 2183525, 2199215, 2532889, 3511175, 4170925, 4803755, 4838273, 7724585, 10996075, 12664445, 24018775, 24191365, 27861779, 38622925, 63322225, 73453781, 120956825, 139308895, 367268905, 696544475, 807991591, 1836344525, 4039957955, 20199789775]

約数ペア:

[(1, 20199789775), (5, 4039957955), (11, 1836344525), (25, 807991591), (29, 696544475), (55, 367268905), (145, 139308895), (167, 120956825), (275, 73453781), (319, 63322225), (523, 38622925), (725, 27861779), (835, 24191365), (841, 24018775), (1595, 12664445), (1837, 10996075), (2615, 7724585), (4175, 4838273), (4205, 4803755), (4843, 4170925), (5753, 3511175), (7975, 2532889), (9185, 2199215), (9251, 2183525), (13075, 1544917), (15167, 1331825), (21025, 960751), (24215, 834185), (28765, 702235), (45925, 439843), (46255, 436705), (53273, 379175), (75835, 266365), (87341, 231275), (121075, 166837), (140447, 143825)]