80974375

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:217

約数の個数: 40

約数和(自身を含む): 108865152

約数和(自身を除く): 27890777

約数列:

[1, 5, 23, 25, 43, 115, 125, 131, 215, 575, 625, 655, 989, 1075, 2875, 3013, 3275, 4945, 5375, 5633, 14375, 15065, 16375, 24725, 26875, 28165, 75325, 81875, 123625, 129559, 140825, 376625, 618125, 647795, 704125, 1883125, 3238975, 3520625, 16194875, 80974375]

約数ペア:

[(1, 80974375), (5, 16194875), (23, 3520625), (25, 3238975), (43, 1883125), (115, 704125), (125, 647795), (131, 618125), (215, 376625), (575, 140825), (625, 129559), (655, 123625), (989, 81875), (1075, 75325), (2875, 28165), (3013, 26875), (3275, 24725), (4945, 16375), (5375, 15065), (5633, 14375)]