21489678

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{409}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 55104000

約数和(自身を除く): 33614322

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 139, 189, 278, 378, 409, 417, 818, 834, 973, 1227, 1251, 1946, 2454, 2502, 2863, 2919, 3681, 3753, 5726, 5838, 7362, 7506, 8589, 8757, 11043, 17178, 17514, 22086, 25767, 26271, 51534, 52542, 56851, 77301, 113702, 154602, 170553, 341106, 397957, 511659, 795914, 1023318, 1193871, 1534977, 2387742, 3069954, 3581613, 7163226, 10744839, 21489678]

約数ペア:

[(1, 21489678), (2, 10744839), (3, 7163226), (6, 3581613), (7, 3069954), (9, 2387742), (14, 1534977), (18, 1193871), (21, 1023318), (27, 795914), (42, 511659), (54, 397957), (63, 341106), (126, 170553), (139, 154602), (189, 113702), (278, 77301), (378, 56851), (409, 52542), (417, 51534), (818, 26271), (834, 25767), (973, 22086), (1227, 17514), (1251, 17178), (1946, 11043), (2454, 8757), (2502, 8589), (2863, 7506), (2919, 7362), (3681, 5838), (3753, 5726)]