20027900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 46663680

約数和(自身を除く): 26635780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 83, 95, 100, 127, 166, 190, 254, 332, 380, 415, 475, 508, 635, 830, 950, 1270, 1577, 1660, 1900, 2075, 2413, 2540, 3154, 3175, 4150, 4826, 6308, 6350, 7885, 8300, 9652, 10541, 12065, 12700, 15770, 21082, 24130, 31540, 39425, 42164, 48260, 52705, 60325, 78850, 105410, 120650, 157700, 200279, 210820, 241300, 263525, 400558, 527050, 801116, 1001395, 1054100, 2002790, 4005580, 5006975, 10013950, 20027900]

約数ペア:

[(1, 20027900), (2, 10013950), (4, 5006975), (5, 4005580), (10, 2002790), (19, 1054100), (20, 1001395), (25, 801116), (38, 527050), (50, 400558), (76, 263525), (83, 241300), (95, 210820), (100, 200279), (127, 157700), (166, 120650), (190, 105410), (254, 78850), (332, 60325), (380, 52705), (415, 48260), (475, 42164), (508, 39425), (635, 31540), (830, 24130), (950, 21082), (1270, 15770), (1577, 12700), (1660, 12065), (1900, 10541), (2075, 9652), (2413, 8300), (2540, 7885), (3154, 6350), (3175, 6308), (4150, 4826)]