21000604390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{31667}}^1$

素因数の和:31821

約数の個数: 64

約数和(自身を含む): 41370061824

約数和(自身を除く): 20369457434

約数列:

[1, 2, 5, 10, 17, 34, 47, 83, 85, 94, 166, 170, 235, 415, 470, 799, 830, 1411, 1598, 2822, 3901, 3995, 7055, 7802, 7990, 14110, 19505, 31667, 39010, 63334, 66317, 132634, 158335, 316670, 331585, 538339, 663170, 1076678, 1488349, 2628361, 2691695, 2976698, 5256722, 5383390, 7441745, 13141805, 14883490, 25301933, 26283610, 44682137, 50603866, 89364274, 123532967, 126509665, 223410685, 247065934, 253019330, 446821370, 617664835, 1235329670, 2100060439, 4200120878, 10500302195, 21000604390]

約数ペア:

[(1, 21000604390), (2, 10500302195), (5, 4200120878), (10, 2100060439), (17, 1235329670), (34, 617664835), (47, 446821370), (83, 253019330), (85, 247065934), (94, 223410685), (166, 126509665), (170, 123532967), (235, 89364274), (415, 50603866), (470, 44682137), (799, 26283610), (830, 25301933), (1411, 14883490), (1598, 13141805), (2822, 7441745), (3901, 5383390), (3995, 5256722), (7055, 2976698), (7802, 2691695), (7990, 2628361), (14110, 1488349), (19505, 1076678), (31667, 663170), (39010, 538339), (63334, 331585), (66317, 316670), (132634, 158335)]