821157561

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{3413}}^1$

素因数の和:3515

約数の個数: 64

約数和(自身を含む): 1485772800

約数和(自身を除く): 664615239

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 67, 133, 171, 189, 201, 399, 469, 513, 603, 1197, 1273, 1407, 1809, 3413, 3591, 3819, 4221, 8911, 10239, 11457, 12663, 23891, 26733, 30717, 34371, 64847, 71673, 80199, 92151, 194541, 215019, 228671, 240597, 453929, 583623, 645057, 686013, 1361787, 1600697, 1750869, 2058039, 4085361, 4344749, 4802091, 6174117, 12256083, 13034247, 14406273, 30413243, 39102741, 43218819, 91239729, 117308223, 273719187, 821157561]

約数ペア:

[(1, 821157561), (3, 273719187), (7, 117308223), (9, 91239729), (19, 43218819), (21, 39102741), (27, 30413243), (57, 14406273), (63, 13034247), (67, 12256083), (133, 6174117), (171, 4802091), (189, 4344749), (201, 4085361), (399, 2058039), (469, 1750869), (513, 1600697), (603, 1361787), (1197, 686013), (1273, 645057), (1407, 583623), (1809, 453929), (3413, 240597), (3591, 228671), (3819, 215019), (4221, 194541), (8911, 92151), (10239, 80199), (11457, 71673), (12663, 64847), (23891, 34371), (26733, 30717)]