19621791

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 36495360

約数和(自身を除く): 16873569

約数列:

[1, 3, 7, 9, 17, 21, 27, 31, 51, 63, 93, 119, 153, 189, 197, 217, 279, 357, 459, 527, 591, 651, 837, 1071, 1379, 1581, 1773, 1953, 3213, 3349, 3689, 4137, 4743, 5319, 5859, 6107, 10047, 11067, 12411, 14229, 18321, 23443, 30141, 33201, 37233, 42749, 54963, 70329, 90423, 99603, 103819, 128247, 164889, 210987, 311457, 384741, 632961, 726733, 934371, 1154223, 2180199, 2803113, 6540597, 19621791]

約数ペア:

[(1, 19621791), (3, 6540597), (7, 2803113), (9, 2180199), (17, 1154223), (21, 934371), (27, 726733), (31, 632961), (51, 384741), (63, 311457), (93, 210987), (119, 164889), (153, 128247), (189, 103819), (197, 99603), (217, 90423), (279, 70329), (357, 54963), (459, 42749), (527, 37233), (591, 33201), (651, 30141), (837, 23443), (1071, 18321), (1379, 14229), (1581, 12411), (1773, 11067), (1953, 10047), (3213, 6107), (3349, 5859), (3689, 5319), (4137, 4743)]