20922990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 38796690

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 19, 22, 30, 33, 38, 47, 55, 57, 66, 71, 94, 95, 110, 114, 141, 142, 165, 190, 209, 213, 235, 282, 285, 330, 355, 418, 426, 470, 517, 570, 627, 705, 710, 781, 893, 1034, 1045, 1065, 1254, 1349, 1410, 1551, 1562, 1786, 2090, 2130, 2343, 2585, 2679, 2698, 3102, 3135, 3337, 3905, 4047, 4465, 4686, 5170, 5358, 6270, 6674, 6745, 7755, 7810, 8094, 8930, 9823, 10011, 11715, 13395, 13490, 14839, 15510, 16685, 19646, 20022, 20235, 23430, 26790, 29469, 29678, 33370, 36707, 40470, 44517, 49115, 50055, 58938, 63403, 73414, 74195, 89034, 98230, 100110, 110121, 126806, 147345, 148390, 183535, 190209, 220242, 222585, 294690, 317015, 367070, 380418, 445170, 550605, 634030, 697433, 951045, 1101210, 1394866, 1902090, 2092299, 3487165, 4184598, 6974330, 10461495, 20922990]

約数ペア:

[(1, 20922990), (2, 10461495), (3, 6974330), (5, 4184598), (6, 3487165), (10, 2092299), (11, 1902090), (15, 1394866), (19, 1101210), (22, 951045), (30, 697433), (33, 634030), (38, 550605), (47, 445170), (55, 380418), (57, 367070), (66, 317015), (71, 294690), (94, 222585), (95, 220242), (110, 190209), (114, 183535), (141, 148390), (142, 147345), (165, 126806), (190, 110121), (209, 100110), (213, 98230), (235, 89034), (282, 74195), (285, 73414), (330, 63403), (355, 58938), (418, 50055), (426, 49115), (470, 44517), (517, 40470), (570, 36707), (627, 33370), (705, 29678), (710, 29469), (781, 26790), (893, 23430), (1034, 20235), (1045, 20022), (1065, 19646), (1254, 16685), (1349, 15510), (1410, 14839), (1551, 13490), (1562, 13395), (1786, 11715), (2090, 10011), (2130, 9823), (2343, 8930), (2585, 8094), (2679, 7810), (2698, 7755), (3102, 6745), (3135, 6674), (3337, 6270), (3905, 5358), (4047, 5170), (4465, 4686)]