25195900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 58590000

約数和(自身を除く): 33394100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 89, 95, 100, 149, 178, 190, 298, 356, 380, 445, 475, 596, 745, 890, 950, 1490, 1691, 1780, 1900, 2225, 2831, 2980, 3382, 3725, 4450, 5662, 6764, 7450, 8455, 8900, 11324, 13261, 14155, 14900, 16910, 26522, 28310, 33820, 42275, 53044, 56620, 66305, 70775, 84550, 132610, 141550, 169100, 251959, 265220, 283100, 331525, 503918, 663050, 1007836, 1259795, 1326100, 2519590, 5039180, 6298975, 12597950, 25195900]

約数ペア:

[(1, 25195900), (2, 12597950), (4, 6298975), (5, 5039180), (10, 2519590), (19, 1326100), (20, 1259795), (25, 1007836), (38, 663050), (50, 503918), (76, 331525), (89, 283100), (95, 265220), (100, 251959), (149, 169100), (178, 141550), (190, 132610), (298, 84550), (356, 70775), (380, 66305), (445, 56620), (475, 53044), (596, 42275), (745, 33820), (890, 28310), (950, 26522), (1490, 16910), (1691, 14900), (1780, 14155), (1900, 13261), (2225, 11324), (2831, 8900), (2980, 8455), (3382, 7450), (3725, 6764), (4450, 5662)]