20628454

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20843546

約数列:

[1, 2, 7, 11, 14, 22, 29, 31, 58, 62, 77, 149, 154, 203, 217, 298, 319, 341, 406, 434, 638, 682, 899, 1043, 1639, 1798, 2086, 2233, 2387, 3278, 4321, 4466, 4619, 4774, 6293, 8642, 9238, 9889, 11473, 12586, 19778, 22946, 30247, 32333, 47531, 50809, 60494, 64666, 69223, 95062, 101618, 133951, 138446, 267902, 332717, 355663, 665434, 711326, 937657, 1473461, 1875314, 2946922, 10314227, 20628454]

約数ペア:

[(1, 20628454), (2, 10314227), (7, 2946922), (11, 1875314), (14, 1473461), (22, 937657), (29, 711326), (31, 665434), (58, 355663), (62, 332717), (77, 267902), (149, 138446), (154, 133951), (203, 101618), (217, 95062), (298, 69223), (319, 64666), (341, 60494), (406, 50809), (434, 47531), (638, 32333), (682, 30247), (899, 22946), (1043, 19778), (1639, 12586), (1798, 11473), (2086, 9889), (2233, 9238), (2387, 8642), (3278, 6293), (4321, 4774), (4466, 4619)]