20195725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 29712384

約数和(自身を除く): 9516659

約数列:

[1, 5, 11, 23, 25, 31, 55, 103, 115, 155, 253, 275, 341, 515, 575, 713, 775, 1133, 1265, 1705, 2369, 2575, 3193, 3565, 5665, 6325, 7843, 8525, 11845, 15965, 17825, 26059, 28325, 35123, 39215, 59225, 73439, 79825, 130295, 175615, 196075, 367195, 651475, 807829, 878075, 1835975, 4039145, 20195725]

約数ペア:

[(1, 20195725), (5, 4039145), (11, 1835975), (23, 878075), (25, 807829), (31, 651475), (55, 367195), (103, 196075), (115, 175615), (155, 130295), (253, 79825), (275, 73439), (341, 59225), (515, 39215), (575, 35123), (713, 28325), (775, 26059), (1133, 17825), (1265, 15965), (1705, 11845), (2369, 8525), (2575, 7843), (3193, 6325), (3565, 5665)]