81520450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:340

約数の個数: 96

約数和(自身を含む): 180792000

約数和(自身を除く): 99271550

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 29, 38, 50, 55, 58, 95, 110, 145, 190, 209, 269, 275, 290, 319, 418, 475, 538, 550, 551, 638, 725, 950, 1045, 1102, 1345, 1450, 1595, 2090, 2690, 2755, 2959, 3190, 5111, 5225, 5510, 5918, 6061, 6725, 7801, 7975, 10222, 10450, 12122, 13450, 13775, 14795, 15602, 15950, 25555, 27550, 29590, 30305, 39005, 51110, 56221, 60610, 73975, 78010, 85811, 112442, 127775, 147950, 148219, 151525, 171622, 195025, 255550, 281105, 296438, 303050, 390050, 429055, 562210, 741095, 858110, 1405525, 1482190, 1630409, 2145275, 2811050, 3260818, 3705475, 4290550, 7410950, 8152045, 16304090, 40760225, 81520450]

約数ペア:

[(1, 81520450), (2, 40760225), (5, 16304090), (10, 8152045), (11, 7410950), (19, 4290550), (22, 3705475), (25, 3260818), (29, 2811050), (38, 2145275), (50, 1630409), (55, 1482190), (58, 1405525), (95, 858110), (110, 741095), (145, 562210), (190, 429055), (209, 390050), (269, 303050), (275, 296438), (290, 281105), (319, 255550), (418, 195025), (475, 171622), (538, 151525), (550, 148219), (551, 147950), (638, 127775), (725, 112442), (950, 85811), (1045, 78010), (1102, 73975), (1345, 60610), (1450, 56221), (1595, 51110), (2090, 39005), (2690, 30305), (2755, 29590), (2959, 27550), (3190, 25555), (5111, 15950), (5225, 15602), (5510, 14795), (5918, 13775), (6061, 13450), (6725, 12122), (7801, 10450), (7975, 10222)]