20747925

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 41434848

約数和(自身を除く): 20686923

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 83, 99, 101, 165, 225, 249, 275, 303, 415, 495, 505, 747, 825, 909, 913, 1111, 1245, 1515, 2075, 2475, 2525, 2739, 3333, 3735, 4545, 4565, 5555, 6225, 7575, 8217, 8383, 9999, 13695, 16665, 18675, 22725, 22825, 25149, 27775, 41085, 41915, 49995, 68475, 75447, 83325, 92213, 125745, 205425, 209575, 249975, 276639, 377235, 461065, 628725, 829917, 1383195, 1886175, 2305325, 4149585, 6915975, 20747925]

約数ペア:

[(1, 20747925), (3, 6915975), (5, 4149585), (9, 2305325), (11, 1886175), (15, 1383195), (25, 829917), (33, 628725), (45, 461065), (55, 377235), (75, 276639), (83, 249975), (99, 209575), (101, 205425), (165, 125745), (225, 92213), (249, 83325), (275, 75447), (303, 68475), (415, 49995), (495, 41915), (505, 41085), (747, 27775), (825, 25149), (909, 22825), (913, 22725), (1111, 18675), (1245, 16665), (1515, 13695), (2075, 9999), (2475, 8383), (2525, 8217), (2739, 7575), (3333, 6225), (3735, 5555), (4545, 4565)]