90175900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1531}}^1$

素因数の和:1595

約数の個数: 72

約数和(自身を含む): 212764160

約数和(自身を除く): 122588260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 380, 475, 589, 620, 775, 950, 1178, 1531, 1550, 1900, 2356, 2945, 3062, 3100, 5890, 6124, 7655, 11780, 14725, 15310, 29089, 29450, 30620, 38275, 47461, 58178, 58900, 76550, 94922, 116356, 145445, 153100, 189844, 237305, 290890, 474610, 581780, 727225, 901759, 949220, 1186525, 1454450, 1803518, 2373050, 2908900, 3607036, 4508795, 4746100, 9017590, 18035180, 22543975, 45087950, 90175900]

約数ペア:

[(1, 90175900), (2, 45087950), (4, 22543975), (5, 18035180), (10, 9017590), (19, 4746100), (20, 4508795), (25, 3607036), (31, 2908900), (38, 2373050), (50, 1803518), (62, 1454450), (76, 1186525), (95, 949220), (100, 901759), (124, 727225), (155, 581780), (190, 474610), (310, 290890), (380, 237305), (475, 189844), (589, 153100), (620, 145445), (775, 116356), (950, 94922), (1178, 76550), (1531, 58900), (1550, 58178), (1900, 47461), (2356, 38275), (2945, 30620), (3062, 29450), (3100, 29089), (5890, 15310), (6124, 14725), (7655, 11780)]