20145700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 48121920

約数和(自身を除く): 27976220

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 230, 380, 437, 460, 461, 475, 575, 874, 922, 950, 1150, 1748, 1844, 1900, 2185, 2300, 2305, 4370, 4610, 8740, 8759, 9220, 10603, 10925, 11525, 17518, 21206, 21850, 23050, 35036, 42412, 43700, 43795, 46100, 53015, 87590, 106030, 175180, 201457, 212060, 218975, 265075, 402914, 437950, 530150, 805828, 875900, 1007285, 1060300, 2014570, 4029140, 5036425, 10072850, 20145700]

約数ペア:

[(1, 20145700), (2, 10072850), (4, 5036425), (5, 4029140), (10, 2014570), (19, 1060300), (20, 1007285), (23, 875900), (25, 805828), (38, 530150), (46, 437950), (50, 402914), (76, 265075), (92, 218975), (95, 212060), (100, 201457), (115, 175180), (190, 106030), (230, 87590), (380, 53015), (437, 46100), (460, 43795), (461, 43700), (475, 42412), (575, 35036), (874, 23050), (922, 21850), (950, 21206), (1150, 17518), (1748, 11525), (1844, 10925), (1900, 10603), (2185, 9220), (2300, 8759), (2305, 8740), (4370, 4610)]