81371125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 120766464

約数和(自身を除く): 39395339

約数列:

[1, 5, 11, 23, 25, 31, 55, 83, 115, 125, 155, 253, 275, 341, 415, 575, 713, 775, 913, 1265, 1375, 1705, 1909, 2075, 2573, 2875, 3565, 3875, 4565, 6325, 7843, 8525, 9545, 10375, 12865, 17825, 20999, 22825, 28303, 31625, 39215, 42625, 47725, 59179, 64325, 89125, 104995, 114125, 141515, 196075, 238625, 295895, 321625, 524975, 650969, 707575, 980375, 1479475, 2624875, 3254845, 3537875, 7397375, 16274225, 81371125]

約数ペア:

[(1, 81371125), (5, 16274225), (11, 7397375), (23, 3537875), (25, 3254845), (31, 2624875), (55, 1479475), (83, 980375), (115, 707575), (125, 650969), (155, 524975), (253, 321625), (275, 295895), (341, 238625), (415, 196075), (575, 141515), (713, 114125), (775, 104995), (913, 89125), (1265, 64325), (1375, 59179), (1705, 47725), (1909, 42625), (2075, 39215), (2573, 31625), (2875, 28303), (3565, 22825), (3875, 20999), (4565, 17825), (6325, 12865), (7843, 10375), (8525, 9545)]