20196571760

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1\times {\mathrm{7723}}^1$

素因数の和:8170

約数の個数: 80

約数和(自身を含む): 47588058336

約数和(自身を除く): 27391486576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 337, 388, 485, 674, 776, 970, 1348, 1552, 1685, 1940, 2696, 3370, 3880, 5392, 6740, 7723, 7760, 13480, 15446, 26960, 30892, 32689, 38615, 61784, 65378, 77230, 123568, 130756, 154460, 163445, 261512, 308920, 326890, 523024, 617840, 653780, 749131, 1307560, 1498262, 2602651, 2615120, 2996524, 3745655, 5205302, 5993048, 7491310, 10410604, 11986096, 13013255, 14982620, 20821208, 26026510, 29965240, 41642416, 52053020, 59930480, 104106040, 208212080, 252457147, 504914294, 1009828588, 1262285735, 2019657176, 2524571470, 4039314352, 5049142940, 10098285880, 20196571760]

約数ペア:

[(1, 20196571760), (2, 10098285880), (4, 5049142940), (5, 4039314352), (8, 2524571470), (10, 2019657176), (16, 1262285735), (20, 1009828588), (40, 504914294), (80, 252457147), (97, 208212080), (194, 104106040), (337, 59930480), (388, 52053020), (485, 41642416), (674, 29965240), (776, 26026510), (970, 20821208), (1348, 14982620), (1552, 13013255), (1685, 11986096), (1940, 10410604), (2696, 7491310), (3370, 5993048), (3880, 5205302), (5392, 3745655), (6740, 2996524), (7723, 2615120), (7760, 2602651), (13480, 1498262), (15446, 1307560), (26960, 749131), (30892, 653780), (32689, 617840), (38615, 523024), (61784, 326890), (65378, 308920), (77230, 261512), (123568, 163445), (130756, 154460)]