21531642

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 49230720

約数和(自身を除く): 27699078

約数列:

[1, 2, 3, 6, 11, 22, 33, 41, 66, 73, 82, 109, 123, 146, 218, 219, 246, 327, 438, 451, 654, 803, 902, 1199, 1353, 1606, 2398, 2409, 2706, 2993, 3597, 4469, 4818, 5986, 7194, 7957, 8938, 8979, 13407, 15914, 17958, 23871, 26814, 32923, 47742, 49159, 65846, 87527, 98318, 98769, 147477, 175054, 197538, 262581, 294954, 326237, 525162, 652474, 978711, 1957422, 3588607, 7177214, 10765821, 21531642]

約数ペア:

[(1, 21531642), (2, 10765821), (3, 7177214), (6, 3588607), (11, 1957422), (22, 978711), (33, 652474), (41, 525162), (66, 326237), (73, 294954), (82, 262581), (109, 197538), (123, 175054), (146, 147477), (218, 98769), (219, 98318), (246, 87527), (327, 65846), (438, 49159), (451, 47742), (654, 32923), (803, 26814), (902, 23871), (1199, 17958), (1353, 15914), (1606, 13407), (2398, 8979), (2409, 8938), (2706, 7957), (2993, 7194), (3597, 5986), (4469, 4818)]